I have a 1994 3.4 v6 that ive done a lot of work on. Recently, the engine doesnt want to start. I changed the spark plugs and wires...the car ran for about three days and started to missfire. Now the car wont start, it just turns over. I replaced the ignition coils and checked the fuel pressure. Everything looks good. Any help would be really appreciated.

 

what is it doing when you try to start it

 

It just turns over. It sounds like its missfiring when its trying to start. The rpm jumps between 500-1000 but wont stay running

 

is your service engine light on and have you checked for spark at the plugs

 

The service engine light isnt on. How do i check the plugs for spark?

 

the auto part store has a check light made for plugging into the wire and on the end of spark plug that has a little light in it if it flashes continous on all cylinders the ignition system is fine

 

oh ok thank you. I will try that and see what happens

 

Or you could save some money and just use your timing light if you have one. Is it possible you found some funky gas? The fact that your misfire is described as progressively worse over 3 days make me suspicious that you may have water in your fuel.

 

Are the plugs gapped to specs? Are any of the plug wires melted on exhaust? What was the reason for the tune up? Preventative maintenance? or previous missfire? any smoke out the exhaust?

 

im having a similar problem my car is running at 400 rpm at full throutle i changed the car and rotor because it was misfiring thew car has 38 psi while the car is running