Timing problems once again...I think...

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Faulk21NG238

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Jun 9, 2010
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Once again I think I have timing problems.

I have a 383 stroker in my 80 Malibu. I have a 600 cfm Summit carb on an Edelbrock performer RPM intake with 170 cc intake runners (heads), Summit HEI distributor, Lunati Voodoo cam Lift .489/.504.

A few problems I am having.

First, the engine wants to die at idle until it gets good and hot (160-180F). I pulled out the timing light to check RPM's (once it would run on it own) and it was around 1300 RPM. I had someone get in and put it in gear and the RPM's drop all the way to 730. Seems to me that this is a big drop in RPM's. Again while its cold it acts up, you have to feather the gas to keep it running until it is hot. If I try to rev it very high it wants to die (like its being flooded).

The first time I timed the motor I timed it to 13 initial but when I hooked up the vacuum advance it jumped to 43 so I timed it back to 32 (which my math tells me initial would be at 2 by doing this...).

Would the first issue be fixed with timing? Did I put it in time correctly?
 

Faulk21NG238

Apprentice
Jun 9, 2010
51
0
0
I am kind of learning as I go here.

Within about 30 second of starting the engine the choke plate is basically completely open. Should the choke plate not open so soon?
 

pontiacgp

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Mar 31, 2006
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it should never open that soon unless the engine is already warm....loosen the 3 screws holding the choke cover and turn it clockwise 1 or 2 notches that are marked near the top of the cover...that should improve it but it may need to be turned a bit more
 
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