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Sep 28, 2004 | 07:49 PM

#11

budhayes3

PT's Slowest Truck

iTrader: (19)

Joined: Apr 2004

Posts: 17,863

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From: Hackensack, NJ

Quote:

Originally Posted by tdogg5.3

Man i have the same problem and i have been trying to figure it out for about a year now.

Truck starts fine in morning, drive to work, park it, Start truck up at lunch time and it cranks over like 10-15 times before it starts. heres what i have done.

change fuel filter
installed new FPRegulator
changed out vacumn hose

the weird thing is i pulled my vaccum tube off several times and never found a drop of fuel. WTF????

You might have a fuel pump issue...I've seen bad pumps act the same way, only instead of too much fuel, the issue is too little. If spark is good, I'd get a fuel pressure guage on there and see what you get after a hot soak. Vapor lock is another thing to consider.

Mar 16, 2005 | 09:11 AM

#12

82lt1

Teching In

Joined: Sep 2003

Posts: 46

Likes: 0

From: Sulphur Springs, IN

Did you guys ever figure out what's wrong with your trucks. I am having the same problem. I put a guage on it and it shows good fuel pressure when it's hard to start. I haven't checked the regulator yet, but will tonight.
Todd

Mar 16, 2005 | 09:23 AM

#13

htsht

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Joined: Sep 2004

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From: Usa

Mine was the regulator. Put on a new one and it ran great.

Mar 16, 2005 | 09:39 AM

#14

BigTex

? ? ? ? ? ?

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Joined: Nov 2001

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From: East of Dallas

Just adding a note to this thread: When you pull off the vacuum hose, no fuel should come out. If it does, replace the regulator. That means under idle vacuum that the intake is actually pulling in fuel and running way too rich. The fuel pressure is probably way off as well.

Mar 16, 2005 | 11:51 AM

#15

Onyx 02

TECH Fanatic

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Joined: May 2004

Posts: 1,841

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From: Texas

I've had to replace the fuel pressure regulator, 2 injectors, and drop the gas tank and clean it thoroughly, because of problems I've had with my '00 Z-71 running rough. Truck has 125k on it now and runs great. Just my 2 cents.

Thank god no problems with my '02, 105k miles and just now need to replace the brakes!!!