'76 CIS Problems

[MURF]

to run poperly a carb conversion requires different shaped pistons and more camshaft=more money$$$$$

[T77911S]

Originally Posted by calling911

You don't think that there is a reason for being out of adjustment? You think the mixture magically changed? I don't. I would guess he has a problem that caused the car to run rich.

how do i know anything, he has not said much about his problem or how it got there. sounds like a lot of work has been done, and right now, he is the only one that knows what has been replaced, tested or checked or adjusted.
his original question was about converting to carbs, so he has not said much about his problem except this "Hard start, doesn't idle and sort of hunts under normal running." we do not know what the original problem was or how it got there. maybe he had another problem originally so how do you know he did not mess with the mixture, got it messed up and took it to shop that does not know what they are doing.
it could very well be a bad WUR with low control pressure or no power to the WUR, but he did not say if the runs bad just at idle or if it idles good cold but bad hot. so based on what little he has said and lack of a pressure tester, he could try the mixture. if the WUR is bad, he would want to have the mixture reset after repalcing anyway.

[ljowdy]

Calling911 I forgot to include the word "IN" preceeding the word experienced

I'm 60 and did experience the Carb days and what changed my mind was when I installed a 2.5 Turbo Subaru in my sandrail in 1996. Up to that time, I had fiddled with carb's on my dunebuggy engines and was extremly tired of messing with them although I believed that they were superior to fuel Injection systems. I owned FI cars and always was afraid of them because you couldn't, for the most part, make road side repairs but, I also realized that the engines ran much smoother and got better mileage.

Once I had the Subaru in my sandrail and realized that the FI didn't flood the engine when you went over bumps and always started, I was sold.

[RoninLB]

Originally Posted by calling911

My guess is there is a little of what you grew up with involved.. I just missed the carb days.. barely.. Im 42but didnt get into cars till my late 20's.

All I can say is progress is a beautiful thing!

I grew up w/carbs and flipped when I saw how great PMOs can be. That said, the huge expense involved sort of demand a cam with some overlap and the right pistons, exhaust, etc.

My orig CIS is also a great induction, not temperamental, almost bulletproof, and low maintenance. Some pelicanheads have produced noticeably more power from CIS with some engine tweaks. Testing equipment is $ well spent. It pays for itself the first time they're needed. I don't have much experience fixing CIS because it always ran perfect.

One thing on CIS though is that they are air leak sensitive and have plenty of possible air leaks. I bought an electronic air and exhaust leak detector. My unit is Snap-On but others have the exact model under their trade name. It's far superior than other methods of leak detection and costs around $100.