Fuel system issue

Asked by GuruT515Y Jun 14, 2018 at 02:22 PM about the 1999 Chevrolet C/K 1500 LS Extended Cab 4WD

Question type: Maintenance & Repair

1999 Chev Suburban.  Started sputtering under acceleration.  Installed new
fuel filter.  Starts (some of the time).  Tested fuel pressure to throttle body and
its is ok).  Still won't start or run well.  Was perfectly normal prior.  Ideas?

1 Answer
26,810

oilyspill answered 5 years ago

What is liter size of engine? If you have that spider fuel system, That system is noted for problems. The start-up fuel pressure can be critical, key on engine off, 60--66 psi. Did you use a fuel pressure gage? In the past, did see service bulletin about fuel poppets sticking. That was usually the first start of the day after vehicle sit over-night. Once it started the vehicle would usually do fine the rest of the day. To fix the fuel poppets there was a cleaning procedure, The procedure I saw was a shop procedure. There could be other issues? How long since a tune-up? Any applicable trouble codes?

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