I found the problem!
- Thread starter Eric2.0
- Start date
mapbike
Well-Known Member
Nope you read wrong sir,
I had 1 engine NOT 2, that I wrecked running it WOT for several miles with an oil/fuel mix at 70:1 and this oil wasn't designed for that lean of a mix, the engine was brand new and it locked up due to my running it too long too hard on too lean of a mix.
Then this very same engine failed again after 420 miles after a complete rebuild, the only part that wasnt new in this engine was the crankshaft, which I bought from another member here used, it looked to be in good condition, but the block that it came out of looked like it had 10,000 miles on it and had been broke in multiple places and had new holes drilled and tapped in it where originally there were no holes, I assume this was for mounting the engine somehow after the mounts had been broken off.
I was a little leary of the crank all along, and that crank was very out of balance from the very start, it would numb my hands, butt & was even rough on my feet if I ran it very hard for very long.
So to sum this all up, this BGF engine was just fine until I trashed it with the lean oil mix and the long distance for too long when it was new and tight.
I truly believe this last failure was due to the huge amount of wicked vibration that this engine had after the rebuild because of the used junk $30 crankshaft I put in it...... I completely believe that if I had just ordered a new crank from BGF for $20 I would still be running and enjoying that engine as we speak, I put a used baddly balanced crank in the engine instead unknowingly and this was it's demize in my honest opinion.
I know you may differ and that is fine, but I will put the engines BGF sells up against any of the others because they all come from the same place & are made from the same cheap materials......some people on here hate all the Grubee engines because they have had several of them that were junk, and some hate the Stingers, and some hate the RAW engine, and so on and so on.............they are all crap shoots........you can get a good of any of them and you can get a bad, you can also trash a good one like I did.........that engine was smoothe and ran like a scalded ape until I did what I did to it, I was a noob to these engines at that time and just gave her more blues than she could handle.........plain and simple, it wasn't the fault of the engine, it all sat on my shoulders.
I dont know where you got the 6 from because I've only had 4 and I killed the 1 of that 4 because of lack of knowledge of these engines..... I had 2 bikes built and running before I had ever even heard of this forum, I didn't have any advice of point of reference at that time so I screwed it up because of this lack of knowledge.
Send me your best engine and let me treat it the way I treated that one and I'll send it back to you siezed up and junk.....guaranteed!!!
None of them will take what I did to mine.
Peace
I had 1 engine NOT 2, that I wrecked running it WOT for several miles with an oil/fuel mix at 70:1 and this oil wasn't designed for that lean of a mix, the engine was brand new and it locked up due to my running it too long too hard on too lean of a mix.
Then this very same engine failed again after 420 miles after a complete rebuild, the only part that wasnt new in this engine was the crankshaft, which I bought from another member here used, it looked to be in good condition, but the block that it came out of looked like it had 10,000 miles on it and had been broke in multiple places and had new holes drilled and tapped in it where originally there were no holes, I assume this was for mounting the engine somehow after the mounts had been broken off.
I was a little leary of the crank all along, and that crank was very out of balance from the very start, it would numb my hands, butt & was even rough on my feet if I ran it very hard for very long.
So to sum this all up, this BGF engine was just fine until I trashed it with the lean oil mix and the long distance for too long when it was new and tight.
I truly believe this last failure was due to the huge amount of wicked vibration that this engine had after the rebuild because of the used junk $30 crankshaft I put in it...... I completely believe that if I had just ordered a new crank from BGF for $20 I would still be running and enjoying that engine as we speak, I put a used baddly balanced crank in the engine instead unknowingly and this was it's demize in my honest opinion.
I know you may differ and that is fine, but I will put the engines BGF sells up against any of the others because they all come from the same place & are made from the same cheap materials......some people on here hate all the Grubee engines because they have had several of them that were junk, and some hate the Stingers, and some hate the RAW engine, and so on and so on.............they are all crap shoots........you can get a good of any of them and you can get a bad, you can also trash a good one like I did.........that engine was smoothe and ran like a scalded ape until I did what I did to it, I was a noob to these engines at that time and just gave her more blues than she could handle.........plain and simple, it wasn't the fault of the engine, it all sat on my shoulders.
I dont know where you got the 6 from because I've only had 4 and I killed the 1 of that 4 because of lack of knowledge of these engines..... I had 2 bikes built and running before I had ever even heard of this forum, I didn't have any advice of point of reference at that time so I screwed it up because of this lack of knowledge.
Send me your best engine and let me treat it the way I treated that one and I'll send it back to you siezed up and junk.....guaranteed!!!
None of them will take what I did to mine.
Peace
MotorBicycleRacing
Well-Known Member
Oh no!
The Chinese 2 stroke kits are a great learning tool and
the way they turn out is more a reflection of the builder
than the kit........it's a Zen kinda thing.
They definitely are not for everybody!
If you have spark try just a little starting fluid shot into
the carb with the air cleaner off.
Spark at the right time, gas, compression = Vrroom , vroomm
If you bought it over to me I would have it running in
half an hour at the most.
Hey, how much will you sell it for?
DuctTapedGoat
Active Member
Aww! Well Eric, as epic as your threads have been, I'm sure there's someone that'd be willing to work on it if you shipped it over.
Try the starting fluid trick. Spray it down the throat of the carburetor. If it doesn't fire off with that ether then there is a problem. Of course there's a problem or you'd be riding by now.
New CDI, new magneto, confirmed spark and you have fuel. The choke is open and the engine still won't fire.
I'm going back to that magneto rotor that was sloppy on the shaft. I think we're looking at an ignition timing problem.
I asked earlier in this thread but didn't get an answer. Is there a warranty with the seller? Have you contacted him and explained your problems?
Too bad you're 2000 miles away. I'd love to have a go at that thing.
Tom
New CDI, new magneto, confirmed spark and you have fuel. The choke is open and the engine still won't fire.
I'm going back to that magneto rotor that was sloppy on the shaft. I think we're looking at an ignition timing problem.
I asked earlier in this thread but didn't get an answer. Is there a warranty with the seller? Have you contacted him and explained your problems?
Too bad you're 2000 miles away. I'd love to have a go at that thing.
Tom
mapbike
Well-Known Member
Tom I agree 100%
Eric2.0 had posted that he had Spark, Fuel, Air, Compression and had even put a small amount of straight gas in the cylinder and still couldn't get it to even try to kick off.....and had told us about the mag rotor being very sloppy on the crank.
That is when myself and others brought the possible wrong timing into question.
We all know that timing has got to be right or all the other components are useless.
I still say several of us guys could have that engine going in no time flat unless there is some major mechanical problem that is still unknown, Like maybe the keyway in the crank was cut in the wrong place or something very strange like that....
I sure would like to get a crack at that engine just for one day.......I love a good challenge and I know the rest of you fella's on this thread like one as well.....
Man I sure was hoping to hear a good report from Eric2.0 my heart really goes out to him and his Dad on this deal.....It seems he has tried so dang hard at this.....and to see this go down as a complete failure really sucks, I wish so bad I had the 100% fool proof answer for him, if the plug is getting wet with fuel and the plug is sparking when the engine turns and it has good compression and the timing is correct it has no other choice but to run are at least try to bust off, man the is frustrating...! It has GOT TO BE TIMING!!!!!
What else could it be?
Dont quit on it Eric, I know this really stinks but that engine can run.....
Peace
Eric2.0 had posted that he had Spark, Fuel, Air, Compression and had even put a small amount of straight gas in the cylinder and still couldn't get it to even try to kick off.....and had told us about the mag rotor being very sloppy on the crank.
That is when myself and others brought the possible wrong timing into question.
We all know that timing has got to be right or all the other components are useless.
I still say several of us guys could have that engine going in no time flat unless there is some major mechanical problem that is still unknown, Like maybe the keyway in the crank was cut in the wrong place or something very strange like that....
I sure would like to get a crack at that engine just for one day.......I love a good challenge and I know the rest of you fella's on this thread like one as well.....
Man I sure was hoping to hear a good report from Eric2.0 my heart really goes out to him and his Dad on this deal.....It seems he has tried so dang hard at this.....and to see this go down as a complete failure really sucks, I wish so bad I had the 100% fool proof answer for him, if the plug is getting wet with fuel and the plug is sparking when the engine turns and it has good compression and the timing is correct it has no other choice but to run are at least try to bust off, man the is frustrating...! It has GOT TO BE TIMING!!!!!
What else could it be?
Dont quit on it Eric, I know this really stinks but that engine can run.....
Peace
I've wondered, even after I made a new Key, that it's still not right. It fits snug with the new Key I made. All I get is like before.. A muffled, quiet "try to start" with no effect from choking or throttle.
I rode forever today trying to get to rip, switched plugs, tried it with choke without choke....everything. Still pedal as fast I can go for 50 friggin feet and all I get is a slight put put that is not even very noisy.
Just pisses me off, because this is my dad's "thing" he brought it up and decided to get the kit. I'm better at this sort of thing than him, so I told him I would get it going.... I told him today I still cannot get it running and of course he's frustrated and told me to forget it.
Well it sucks, because it takes away some of my image...makes me look bad..know what I mean? I hate that and for Christ sakes I have worked and ran a 700 triple Polaris Sled engine, worked on an Outboard engines(even re-built one) built and raced a 358 Chevy too.
So I know what makes an engine tick and I'm no "greenhorn" but this damn engine just boggles my mind...I'm thinking vacuum leak, cracked head/rings...something like that. Or even the keyway not in the right place throwing off timing. Who knows....with this Chinese junk it could very well be.
I'm in Jefferson County, NY Quite a ways away. I'd be there tonight if I were closer...I promise you that and I'd take your offer fully. no doubt.
I'll talk to dad about that....
I also know my way around an engine and had much success.... I'm assuming something is VERY wrong with this POS..... Something like a Major assembly problem..Maby the rings are crap. Just not enough compression.
It's just BS, because we assumed we could put it on there and it would work...not turn into a major feat that I had to practically rebuild a brand NEW motor!
I sure wish Yamaha would make an engine like this....I'd rather pay more for quality.
We got the kit almost a year ago I think...We just got around to getting it in a running mode the last few weeks. Si I doubt this is something we can return now.
I'l ltry ether....I mean Why the **** not?
I actually now have excellent spark and it's blue as blue can be and steady. So I took it back out and it started up and put putted for at least 15-20 seconds at idle with clutch pulled in. It sat there and ran. It didn't run strong, but rather like it was running out of gas and no response hardly from the throttle, very bogged out feeling, then died. I thought it was about to take off...got excited then blah. I even gave dad a thumbs up at one point lol. By far the most success I've had so far.
It wouldn't start up again like that....just the typical put put after rolling for 50 feet so I put it back in the shop swearing up a storm while rubbing my worn out legs.
I think the carb is junk....It starts sort of and has a nice blue spark...it can't be the timing now. Now it seems it starves for gas.
I'm so fickin sick of this.... It's a joke we have to do so much to track down problems in a new engine and saying "it's the builder" pffftttt I don't feel like working on a new engine like it was 100 years old and needs rebuilding. It should kinda run out of the box...
Pure BS.
It wouldn't start up again like that....just the typical put put after rolling for 50 feet so I put it back in the shop swearing up a storm while rubbing my worn out legs.
I think the carb is junk....It starts sort of and has a nice blue spark...it can't be the timing now. Now it seems it starves for gas.
I'm so fickin sick of this.... It's a joke we have to do so much to track down problems in a new engine and saying "it's the builder" pffftttt I don't feel like working on a new engine like it was 100 years old and needs rebuilding. It should kinda run out of the box...
Pure BS.
DuctTapedGoat
Active Member
Eric, just to ask and save myself the time of searching through 20 pages of threads - what kinda carb is it you've got?
DuctTapedGoat
Active Member
Dang it, I was hoping for a different answer.
Check for air leaks at the fitting, try the needle at all settings, make sure your jet is tight, check the intake gasket to make sure it's not blocking the intake tube, make sure your oil ratio isn't /too/ rich, make sure the choke isn't slipping into the closed position, check the delivery needle, tang and float, and I agree to check the petcock filter - even both filters.
Check for air leaks at the fitting, try the needle at all settings, make sure your jet is tight, check the intake gasket to make sure it's not blocking the intake tube, make sure your oil ratio isn't /too/ rich, make sure the choke isn't slipping into the closed position, check the delivery needle, tang and float, and I agree to check the petcock filter - even both filters.
Gas runs out of that thing like me taking a piss after a case of Genny....No rust and all I got out of this miserable experience is worn out legs and a disappointed father that looks at me like WTF? running yet?
I don't give a f'ck that they are cheap....It seems they need a special massage and persuasion to even attempt to run after replacing **** you should never have to replace.
Logging off now before I get my hammer out and actually kill that damn thing.
I did all that....everything.....and then some.
I'm officially done....it's over.