1998 GMC Sierra Starting problems

Tiny
RCOOP60
  • MEMBER
  • 1998 GMC SIERRA
Engine Mechanical problem
1998 GMC Sierra 6 cyl Two Wheel Drive Automatic

Hello,

I have a 98 GMC 1500 Siera, 4.3 Vortec eng (V6) 160,000 mi. Over the last two weeks, I have noticed that it was getting harder to start in the Mornings. Battery OK, Starter OK, but would not crank until after 8 to 10 tries.

As of yesterday it wont start at all, unless I use Engine starting fluid then it cranks immediately, and seems to run OK

I began trouble shooting by doing the following:

Listened to hear fuel pump activate. It did
changed fuel filter, changed fuel pressure sensor, Cleaned airflow sensor, Changed Air filter, cleaned the Throtle Valve, and changed the MAP sensor.

None of the above worked. (HELLLLP!)

is their something I missed? Or should I now change the fuel pump (OUCH!)


Rick
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Tuesday, June 2nd, 2009 AT 1:01 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, the spider fuel system is known for problems. Use a gage, check fuel pressure. You might try some injector cleaner, see if it helps.
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Tuesday, June 2nd, 2009 AT 1:50 PM
Tiny
RCOOP60
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Thanks for your input JDL123. Apparently, I failed to mention previously that I removed the Throtle and cover assembly to view the Spider fuel lines to see if they were Broken/Leaking, but they looked fine?

I will try another bottle of FI Cleaner, if that dose'nt work, then I'll go for the Fuel Pump (Ouch!)

Thanks again,

Rick
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Friday, June 5th, 2009 AT 8:14 AM

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