carb problems

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carb problems

Post  dave d on September 9th 2012, 12:42 pm

What i got going on is 545 10-1 comp,429-460 trick flows, eddy torque 2,small 700's lift cam solid roller, eddy 750 carb. OK so the problem is went to a 850 demon 78's in front 80's in the rear, new power valve.The car is smoking like crazy even tried buddy's 850 holley that came off is car and it's still smoking. This motor does not smoke with the eddy 750 but it should be able to handle the bigger carb,I'm stumped any help would greatly be appreciated. Dave
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Re: carb problems

Post  4604X4 on September 9th 2012, 1:14 pm

Did you put in the correct size PV? You didn't list cam specs but with that lift I suspect you have very little vacuum. Is your PV a 4.5 or lower?
Maybe your Buddies carb has 6.5 or larger PV too. Just not right for your combo. The jets sound kinda small too. IMO.
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Re: carb problems

Post  crittersf1 on September 9th 2012, 1:15 pm

Smoking all the time? Only when jumped on? Float levels correct?
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Re: carb problems

Post  dave d on September 9th 2012, 2:51 pm

float levels correct cam is 284 intake 294 ex advertised duration pv is a 3.5 haven't even tried to drive it smoking on start up fills the garage up in no time,buddy 850 is squared 80's ran fine on is moped
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Re: carb problems

Post  jason on September 9th 2012, 4:09 pm

I it a fresh engine?
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Re: carb problems

Post  4604X4 on September 9th 2012, 4:16 pm

Could your fuel pressure be too high and overpowering the needle/seat?
Weird that the carb works okay on your Buddy's car and floods yours. Assumning it has a choke, is it opening?!
Could motor just be loaded up from first carb, making you think your Buddy's carb is acting up to?
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Re: carb problems

Post  crittersf1 on September 9th 2012, 4:36 pm

If the fuel pressure wasn't too much for the Edeljunk, it's not too much for the Holley. What do the plugs look like? What heat range? Type?
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Re: carb problems

Post  jason on September 9th 2012, 4:55 pm

I was wondering if the engine was new did you use the right oil for break in?
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