I HAVE A P-3500 STEP VAN WITH A 6.5 DIESEL ENGINE/NOT TURBO.

1997 GMC

Tiny

overworked

September, 10, 2011 AT 1:26 AM

It starts and runs very well, then after a few minutes, white/gray looking smoke starts to go from light to heavy, but it still runs fine. What is causing this? I have been told that it could be EGR vaulve, but it is ok. Where do I look next.

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1 Answer

Tiny

Jacobandnickolas

September, 10, 2011 AT 1:30 AM

Make sure your vehicle isn't using coolant. Check fuel pressure.

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