thegreyghost
Well-known member
So I have a brand new to me 66 coupe with a 200 ci / offy tri carb setup (holley 1940's I think) and a C4. I know the engine had the cam changed, but I'm unsure what's in it. I think it may be from Clifford. Right now it will start with a little effort and run, but the instant I put it in gear the engine dies.
Here's what I've been able to check so far:
manifold vacuum is about 14 at idle - steady.
timing - who knows? When i put the light on it the mark is about an inch above the scale on the engine. Adjusting it lowers my manifold vacuum and makes the engine run worse, so I think it's close.
I "looked" all over the engine with carb cleaner for a leak and could not find one. also check the modulator on the C4 and no leaks there.
The distributor does not have vacuum advance and the ported vacuum from the carbs are plugged and leak free.
I didn't put a tach on it yet, but the idle sounds plenty fast and appears to be running only off the center carb. The screws on the two outer carbs are all the way out. I've tried turning them in a little and other than a faster idle, it didn't change anything.
Not sure where I should be looking next.
Sorry for the lack of info on the engine itself, but right now it's all I have to go on.
Any help appreciated.
Here's what I've been able to check so far:
manifold vacuum is about 14 at idle - steady.
timing - who knows? When i put the light on it the mark is about an inch above the scale on the engine. Adjusting it lowers my manifold vacuum and makes the engine run worse, so I think it's close.
I "looked" all over the engine with carb cleaner for a leak and could not find one. also check the modulator on the C4 and no leaks there.
The distributor does not have vacuum advance and the ported vacuum from the carbs are plugged and leak free.
I didn't put a tach on it yet, but the idle sounds plenty fast and appears to be running only off the center carb. The screws on the two outer carbs are all the way out. I've tried turning them in a little and other than a faster idle, it didn't change anything.
Not sure where I should be looking next.
Sorry for the lack of info on the engine itself, but right now it's all I have to go on.
Any help appreciated.