Car won't start HELP!

91laserrs · 10-13-2010

Alright well I got my self a new comuter car if I can figure out what's wrong with it. I have a 92 Plymouth laser 4g37 na. It won't start. It will crank an crank but nothing. An checked to spark an there is spark. Can smell the fuel from cranking it over. From what I kno the person who owned it was jus driving it then it jus died while driving. Then wouldn't start ever since an it was all of a sudden I guess. I lve owned many Dsms an i love em an I don't want to give up on this one so any sugggestion an ideas are appriciated
Thanks

**goodhart** · 10-14-2010

Do you have compression? Have you changed plugs? How long has this car been sitting? How old could the gas be? If it just died while driving, are you sure timing didn't skip a tooth or something? Have you checked the timing belt?

91laserrs · 10-14-2010

The car has compression ai don't think that it has been Sittin for long not long enough that the car won't even sputer or nothing on the gas thats in it an I mean I have compression an spark an fuel so WTF? I should have a runnin motor. Im sure that even if it jumped a tooth with only the SOHC it should still sputer. It spins like there is no gas or spark

bertrenolds5 · 10-14-2010

Have you checked for error codes? I worry you have bent valves and a spelling problem.

way2fastalon · 10-14-2010

injectors pulsating ? enough fuel pressure spark off time plug wires mixed up its 1432 firing order

**Halon** · 10-14-2010

You need spark, compression, and proper air/fuel. And you need it all to happen at the correct time (timing). If you know you have compression, then check that off the list.

Go down the list, and start eliminating possibilities.

91laserrs · 10-14-2010

how do i check the timing on a 4g37. this is the first one of these i have owned i have owned plenty of 4g63's. any links or what ever would help alot. an as for bent valves i have read they are non interference motors. so im not worried about bent valves. but any info on how to time this car to rule that out would be good an then im goin to check the fuel pump an injectors

91laserrs · 10-14-2010

Is the cam shaft tdc the same as a 4g63. The dowl pin up?

**Halon** · 10-14-2010

Bent valves will usually result in extremely low compression. Do a compression test.

Alpha D · 10-14-2010

Quote:

Originally Posted by Halon

Bent valves will usually result in extremely low compression. Do a compression test.

just curious how low?

**goodhart** · 10-14-2010

Your best bet would be to buy a Chilton or Haynes manual for the timing and compression specs. I'm pretty sure all DSM models are in the same book. If you can't find one, try visiting their websites or call them. All you need should be in there

Alpha D · 10-14-2010

According to chilton i am a DEAD man walking compression number wise.

91laserrs · 10-15-2010

Mine doesn't have bent valves it is a non interference motor so the valves will never hit the piston compression is 120 across the board it's tired but not broken an so I need to find absolute tdc so I can see it jumped teeth but I don't kno what position the cam is suppose to be an so if there is a link that u kno to help me I would appreciate it

**Halon** · 10-15-2010

Quote:

Originally Posted by Alpha D

just curious how low?

Everytime I've dealt with a bent valve, compression numbers were way down there close to 0.

So you know your timing skipped? Well then there's the obvious place to start. Just start searching for how to do it. Or like was mentioned, buy a Haynes, or maybe it's on those DSM CD's that float around? Pretty sure I have a Haynes, and a CD at home somewhere...

**goodhart** · 10-15-2010

Quote:

Originally Posted by 91laserrs

Mine doesn't have bent valves it is a non interference motor so the valves will never hit the piston compression is 120 across the board it's tired but not broken

That's not horrible for a motor with that many miles, and as long as it's even across the board, you probably are good.

Quote:

Originally Posted by 91laserrs

an so I need to find absolute tdc so I can see it jumped teeth but I don't kno what position the cam is suppose to be an so if there is a link that u kno to help me I would appreciate it

Like I said, go to O Reilly's or some other parts store, and buy a Chilton manual. This should all be in there. I really doubt if many people on this site know a whole lot about the 4g37, so we are all just giving you general car knowledge in hopes that you figure it out. Go buy a manual.