My 2003 pontiac turns over but won't start I replaced the timing chain crankshaft sensor manifold gaskets and camshaft sensor it has spark plus there is gas the fuel pump does work can anyone help?

30

Asked by Aug 11, 2014 at 03:15 PM about the 2003 Pontiac Bonneville SE

Question type: Maintenance & Repair

I have replaced all these parts and
still won't start

10 Answers

1,090

did you change the timing chain because it broke? If so you have bent valves and need new heads, reman'd. a compression test will confirm this.

1 out of 1 people think this is helpful.
Best Answer
30

No I just changed it cause I thought it was the timing chain it's got good compression

1 out of 1 people think this is helpful.
62,985

Are the fuel injectors spraying? Use a noid light and see if the fuel injectors are getting a trigger signal from the computer (PCM). Did you replace/check the camshaft sensor? Was the service engine soon light on before it died? If so, did you pull the trouble code(s)? HTH. -Jim

30

Yes the injectors are spraying and I replaced camshaft sensor and no dice

1 out of 1 people think this is helpful.
62,985

Have you replaced the spark plugs? They may be gasoline fouled. With spark, fuel, and compression it should be running. Pull the spark plugs. If they're wet and smell of gasoline replace them. Also check that you have the correct spark plug wires going to the correct cylinders. HTH. -Jim

30

That's under stable I can't still figure out why it won't start thnks

1 out of 1 people think this is helpful.
4,525

Check injector timing. If they are spraying 180 degrees off the car won't run. If you can get the engine to fire up when you spray gas down the throttle body, that's probably what's going on.

1 out of 1 people think this is helpful.
62,985

Good catch, Norm! Hadn't thought of that. -Jim

30

It does pass gas and if I spray gas in the throttle body it won't start nothing happens the timing is at top dead center

62,985

Have you checked the spark plugs? Gasoline fouled plugs won't fire. HTH. -Jim

Your Answer

Add photo

Related Questions

Bonneville

Looking for a Used Bonneville in your area?

CarGurus has 523 nationwide Bonneville listings starting at $1,695.

ZIP:

Search Pontiac Bonneville Questions

Pontiac Bonneville Experts

#1 ticklemedaly
ticklemedaly
Reputation 380
#2 dandyoun
dandyoun
Reputation 360
#3 Js08016
Js08016
Reputation 330
View All

Related Models For Sale

Used Pontiac Grand Prix
23 Great Deals out of 2,896 listings starting at $879
Used Chevrolet Impala
595 Great Deals out of 29,130 listings starting at $1,300
Used Chevrolet Monte Carlo
10 Great Deals out of 1,413 listings starting at $2,500
Used Pontiac Grand Am
1,309 listings starting at $799
Used Buick LeSabre
5 Great Deals out of 1,996 listings starting at $1,588
Used Pontiac GTO
5 Great Deals out of 434 listings starting at $5,995
Used Buick Regal
101 Great Deals out of 10,259 listings starting at $3,495
Used Chevrolet Malibu
812 Great Deals out of 88,732 listings starting at $1,900
Used Pontiac Firebird
9 Great Deals out of 791 listings starting at $1,800
Used Chevrolet Camaro
144 Great Deals out of 35,537 listings starting at $1,995
Used Honda Accord
739 Great Deals out of 82,781 listings starting at $500