pedalhappy

Hey guys, my 2003 cobra was in the shop for about 4 months over here in italy mainly because they suck at their job and are slow. So story goes as this.

I bought the car for 17k with 40k miles on it 6 months ago and it had an issue with overheating. I wasnt told how many times it was overheated but he only said once. he replacedd the waterpump with the edelbrock from AM. It still got hotter so I thought it was a tstat but at most a head gasket change. I was wrong and one head was bad and dumping water into 2nd piston from the front on the passenger side.

I bought a head from a guy off of corral and he said he did homeporting to it and other than that it was like new. I got it and the valve guides needed redone so I paid for that and the head was then installed. Apparently the homeporting was a little more than what I thought so now the heads dont match and im running rich on one side with the bypass connected and lean with it disconnected.

I drove it around for about 10 minutes after getting it back, I know I need a tune but I am in italy and its not possible, then i drove it 3 minutes down the road and back, then this morning I drove it about 4 minutes and hit it in 2nd gear until it broke the tires loose to about 3k rpms. When I let off the gas at about 3k it died and didnt want to start but when it did it soundded like it was running off of 4 pistons, sounded like it was missing hard. I know it could be fouled out plugs but I havent had a chance to check since I have to be at work and at the time I didnt have my extension long enough to get the spark plugs.

I know that it will never run 100% correctly with one head having a mild port but I cant match the other until I go back home in a couple of months. I need to get it running again and make it last a little bit and I am ok with it running rich for a little bit because I dont think it will wash off my coat in 2 months of minimal driving.

Can I get some input on getting it going again and some advice for it being reliable until I leave?

pedalhappy

Ok so I looked at it and the spark plugs are soaked, what does sugar in the gas tank look or sound like? It looked like it had grunge on the spark plugs but that could have been from the recent full painting of the valve covers. I cleaned off the spark plugs and no difference it still wont start. Where do the coil packs get their charge from? maybe thats going out. I havent done much research on these pos modular motors but I can tell you I am about ready to swap in a 408w

pedalhappy

Today, I tested the voltage on the clips to the coils and it was all good. I also checked compression to make sure somehow it didnt jump timing. Next check will be cam and crank position sensors.

WhiteFoxGT

air fuel spark....assume you have air, check fuel pressure at rail, check injector pulse. check for spark... pull a coil and plug, ground plug to valve cover and crank see if its firing