I have a 1998 gmc 4.3 pickup truck and it wont start. Any ideas why?

Asked by May 08, 2015 at 10:15 AM about the GMC S-15

Question type: General

I replaced with new fuel pump, coil,
spark plugs, spark plug wires,
distributor cap, rotar button, all new
brake system, it was  working fine for
3 weeks then it just died. It starts
when you prime with injecter fluid
once it burns of cuts out.   after i
chaged the brake pads it.hasnt
started since. any idea what the
problem could be.

4 Answers

36,705

Sounds like you have a fuel issue. I would get a pressure gauge on it and see what she's putting out. You have spark since it will run when starting fluid is sprayed. You may have bad injectors, bad fuel pressure regulator, plugged fuel filter. Do you have the check engine light on? May want to get the codes read if it's on. Will cut out a lot of guess work.

There is fuel going to the trottle body but not to the injecters i took out the injecters and cleaned them out. The fuel lines are all clear and its a new filter. It seems the gas is going as far as the trottle body and thats it

36,705

Test for power to the injectors. If no power, you may have an ECU problem.

36,705

You should get a fuel pressure gauge and check the fuel pressure. Your regulator could be shot.

Your Answer

Add photo

Related Questions

S-15

Looking for a Used S-15 in your area?

CarGurus has 6 nationwide S-15 listings and the tools to find you a great deal.

ZIP:

Search GMC S-15 Questions

GMC S-15 Experts

#1 yetilikesbeer
yetilikesbeer
Reputation 20
#1 Bob Beaman
Bob Beaman
Reputation 20
#3 tennisshoes
tennisshoes
Reputation 10
View All

Related Models For Sale

Used Chevrolet S-10
6 Great Deals out of 1,453 listings starting at $1,495
Used Chevrolet Silverado 1500
2,064 Great Deals out of 159,888 listings starting at $999
Used GMC Sonoma
5 Great Deals out of 471 listings starting at $2,700
Used Ford F-150
2,460 Great Deals out of 210,800 listings starting at $895
Used Ford Ranger
179 Great Deals out of 6,266 listings starting at $1,300
Used GMC Sierra 1500
908 Great Deals out of 64,759 listings starting at $1,500
Used Chevrolet C/K 1500
884 listings starting at $4,599
Used Chevrolet Corvette
118 Great Deals out of 20,721 listings starting at $3,499
Used Ford Mustang
319 Great Deals out of 45,670 listings starting at $2,000
Used Dodge Ram 1500
438 Great Deals out of 11,518 listings starting at $700
Used GMC Sierra 1500HD
4 Great Deals out of 98 listings starting at $2,995
Used GMC Jimmy
237 listings starting at $2,295