Engine stalls at WOT

Old 06-28-2013, 04:15 AM
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Questions?? Engine stalls at WOT

Ok, so the car seems responsive in the low to mid range speeds but as soon as I give it full throttle, it dies with some more smoke blue coming out of the exhaust. I tried leaning the HSN more than half a turn but it made a slight to no difference. This car was running perfect in winter but I have never tuned a car in summer. Here are the weather conditions: The temps are around 30C outside,the barometric pressure is 1016 millibar and the humidity is 54%. I also checked to see if the air filter was a restriction but it isn't. The fuel is new and my glow plug has about 5 litres of usage on it. What should I do?
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Old 06-28-2013, 04:33 AM
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Originally Posted by turbo5513
Ok, so the car seems responsive in the low to mid range speeds but as soon as I give it full throttle, it dies with some more smoke blue coming out of the exhaust. I tried leaning the HSN more than half a turn but it made a slight to no difference. This car was running perfect in winter but I have never tuned a car in summer. Here are the weather conditions: The temps are around 30C outside,the barometric pressure is 1016 millibar and the humidity is 54%. I also checked to see if the air filter was a restriction but it isn't. The fuel is new and my glow plug has about 5 litres of usage on it. What should I do?
Try richening the HSN. Usually when the engine dies at high rpm it is because the HSN mixture is too lean.

Good luck.

Lee
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Old 06-28-2013, 04:47 AM
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Originally Posted by turbo5513
Ok, so the car seems responsive in the low to mid range speeds but as soon as I give it full throttle, it dies with some more smoke blue coming out of the exhaust. I tried leaning the HSN more than half a turn but it made a slight to no difference. This car was running perfect in winter but I have never tuned a car in summer. Here are the weather conditions: The temps are around 30C outside,the barometric pressure is 1016 millibar and the humidity is 54%. I also checked to see if the air filter was a restriction but it isn't. The fuel is new and my glow plug has about 5 litres of usage on it. What should I do?
check your servo linkage too. some motors do not like it when you do not have that little "play" in the carb at WOT. if that is not it, I have been taught this is all LSN
I would richen LSN. worked for me.
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Old 06-28-2013, 04:52 AM
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Originally Posted by Winner's Circle
Try richening the HSN. Usually when the engine dies at high rpm it is because the HSN mixture is too lean.

Good luck.

Lee
Hi,
I tried to richen the HSN but it only made it bog more and leaning it didn't help either?
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Old 06-28-2013, 05:09 AM
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Did you change the glowplug?
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Old 06-28-2013, 06:39 AM
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Reset it back to factory and start again.
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Old 06-28-2013, 07:26 AM
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It doesn't sound like a tuning issue. How's the compression? Usually when engines start ghost flaming like that it's a mechanical issue. A front bearing leak would be a prime suspect IMO. Check the clutch also.
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Old 06-28-2013, 07:46 AM
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Thanks guys I fixed the problem. The LSN needed to be richened 1/4 turn, I needed a new glow plug and I needed to lean the HSN. Time of some bashing
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Old 06-29-2013, 06:48 AM
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Good to hear that you solved your engine issue.
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Old 07-25-2013, 06:06 AM
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My friends lrp 30 does the same..it will run 1/2throttle but as soon as we hit wot it dies ..its a new engine.just broken in.what can cause this?we are on the rich side already.the hsn is on 3.5 while the lsn is flush on the bevel.any ideas?
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Old 07-25-2013, 06:33 AM
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double check to make sure that the entire FUEL SYSTEM is "air-leak" free...and that goes for the exhaust side as well.......either one can be causing the carb to detect a lean condition at full throttle.........
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Old 07-25-2013, 10:58 AM
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Tubing is new..plug is new..just cant go wot!it sux!
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Old 07-25-2013, 11:39 AM
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Originally Posted by m0thertruckah1
Tubing is new..plug is new..just cant go wot!it sux!
Try leaning it out a few hours.
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Old 07-25-2013, 09:55 PM
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Originally Posted by sschultz
Try leaning it out a few hours.
both needles?
thanks!
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Old 07-26-2013, 05:10 AM
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Originally Posted by m0thertruckah1
both needles?
thanks!
If it idles good and after 10 seconds of idling, it revs clean, lsn is good. You problem lies with the HSN.
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