Ok here is weird scenario
I had to park my car a few years ago. ran when parked,
Now I can not get it to run properly. I drained all the fuel and replaced it.
When you try to start the engine it will start, but starts hunting and surging then dies, sometimes it backfires through intake before dying.
I replaced the complete CIS with a set of a known running car, same thing.
Frustrated and thinking carbs have less vacuum leaks etc to figure out. I replaced it with the single carb
http://forums.pelicanparts.com/porsche-911-technical-forum/357313-oh-yeah-buddy-kill-newbie.html
I personally took this off a running engine. I added a PMO regulator and it is set to 3.5 PSI
I have tried the original CIS fuel pump AND a working low PSI fuel pump for carbs.
Still exact same symptoms
So I am thinking it shouldn't be fuel related.
I checked distributor and all looks good. Spark is good from coil
I did cold compression test all were around 110-120 (bad gauge doesn't stay at highest)
Does anybody have any ideas??? I don't want this to turn into debate on CIS vs Carb, especially the single carb debate. I just want the car to run. ANYTHING is better than a non running car.
things I am wondering about
- I have not done valves. but like I said it was running when parked
- I am wondering if there might be a restriction of blockage in the fuel RETURN line? I read somewhere this can cause issues. How could I check that and does it sound like it would cause this issue?
ANYTHING???
