I’ve got an 89 hatch with hci, vortech v1, intercooler, and all supporting mods including ford performance 47lb injectors. I just finished doing intake gaskets and a catch can after the car sat for a few months. It fired up right away but has a terrible misfire, after checking header temps the number 2 and 3 cylinders are cold. Pulled the plugs and there’s no fuel at all.
I know I have fuel at the rail because the number 1 and 4 cylinders are firing correctly. Some things i’ve tried so far are testing the injector plug for 12 volts which they passed, jumped the injectors with alligator clips to make sure they’re clicking open, cleaned the injectors, switched the injectors around to see if the problem moved which it didn’t, closed the contacts on the salt and pepper shakers, and switched computers.
This really has me stumped and I don’t know what else to try. Any suggestions would be appreciated.
Update: I forgot to add that i had done intake gaskets a couple months ago do to them leaking because i hadn’t properly vented my crankcase yet. Anyway i replaced them and took the car half a mile down the road before it started overheating. Turns out the gaskets they gave me at yearwood were missing a water port right underneath the 2 cylinders that are missing.
I’ve done some more troubleshooting and this is what i’ve come up with. I put a noid light on the injectors and both have pulse. I pulled the rail with the injectors and cranked the motor, both injectors sprayed fuel. i tested spark at the plugs and both have spark. i put 2 of the old plugs in which made no difference. I pulled the valve cover and cranked the motor, both rockers are opening and closing as they should. The last thing i have to test is compression. If it fails the compression test i believe its either going to be burned valves or a blown head gasket from when the car overheated.
Thanks for all the help and i’ll update again after i test compression.
I know I have fuel at the rail because the number 1 and 4 cylinders are firing correctly. Some things i’ve tried so far are testing the injector plug for 12 volts which they passed, jumped the injectors with alligator clips to make sure they’re clicking open, cleaned the injectors, switched the injectors around to see if the problem moved which it didn’t, closed the contacts on the salt and pepper shakers, and switched computers.
This really has me stumped and I don’t know what else to try. Any suggestions would be appreciated.
Update: I forgot to add that i had done intake gaskets a couple months ago do to them leaking because i hadn’t properly vented my crankcase yet. Anyway i replaced them and took the car half a mile down the road before it started overheating. Turns out the gaskets they gave me at yearwood were missing a water port right underneath the 2 cylinders that are missing.
I’ve done some more troubleshooting and this is what i’ve come up with. I put a noid light on the injectors and both have pulse. I pulled the rail with the injectors and cranked the motor, both injectors sprayed fuel. i tested spark at the plugs and both have spark. i put 2 of the old plugs in which made no difference. I pulled the valve cover and cranked the motor, both rockers are opening and closing as they should. The last thing i have to test is compression. If it fails the compression test i believe its either going to be burned valves or a blown head gasket from when the car overheated.
Thanks for all the help and i’ll update again after i test compression.
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