Hard starting 87 TBI Suburban - The 1947 - Present Chevrolet & GMC Truck Message Board Network

crisco · 05-31-2011, 10:28 PM

My 87 suburban with a 350 TBI has an odd problem I can't nail down.

If I get in, turn the key, and crank it won't start for a good 5 seconds.

BUT if I get in, and only turn the key to the crank position for a second, wait a second, then do it again it starts instantly.
It seems like the pump isn't priming unless its cranking?

Any ideas?

motornut · 06-01-2011, 07:09 AM

is there no sound from the fuel pump ,just before crankin
i usally turn the key wait for the pump to stop then crank

68Timber · 06-07-2011, 07:51 PM

Sounds like a fuel pump that's getting weak.

Hoods69BadBowTie · 06-09-2011, 11:10 PM

Quote:

Originally Posted by BRUISER

Sounds like a fuel pump that's getting weak.

Yep that's the same thing I was thinking. Did you listen for the pump priming when you turn the key yet?

05-31-2011, 10:28 PM	#1
crisco Registered User Join Date: Nov 2006 Location: rochester Posts: 71	Hard starting 87 TBI Suburban My 87 suburban with a 350 TBI has an odd problem I can't nail down. If I get in, turn the key, and crank it won't start for a good 5 seconds. BUT if I get in, and only turn the key to the crank position for a second, wait a second, then do it again it starts instantly. It seems like the pump isn't priming unless its cranking? Any ideas?

06-01-2011, 07:09 AM	#2
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: Hard starting 87 TBI Suburban is there no sound from the fuel pump ,just before crankin i usally turn the key wait for the pump to stop then crank __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350

06-07-2011, 07:51 PM	#3
68Timber I know the pieces fit Join Date: Nov 2007 Location: MONTGOMERY, AL Posts: 5,523	Re: Hard starting 87 TBI Suburban Sounds like a fuel pump that's getting weak. __________________ John 79 2wd Blazer (Bruiser) 85 M1009 Blazer (Sarge) build 74 Honda Z50 build



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