cold starting?

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Aug 8, 2017 | 10:59 AM

royal flush

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Racer

Joined: Mar 2016

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cold starting?

First start-up takes afew seconds to start compared to when motor is warm-normal?

Aug 8, 2017 | 11:29 AM

Pounder

1/4 mile/AutoX

Joined: Jun 2014

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From: Buffalo Texas

mine fires right off always, maybe you have a bit low fuel pressure ?????

Aug 8, 2017 | 11:49 AM

royal flush

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Racer

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I hear the fuel pump go on--i think im thinking alot bigger deal than it really is--its about maybe a second longer to fire compared to when motor is warm and fires instantly

Aug 8, 2017 | 12:12 PM

dbgoodwin

Safety Car

Joined: Feb 2013

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From: Greensboro Nc

Quote:

Originally Posted by royal flush

I hear the fuel pump go on--i think im thinking alot bigger deal than it really is--its about maybe a second longer to fire compared to when motor is warm and fires instantly

i suspect this as well.

I actually prefer the way both my corvette and my toyota pickup start in the cold, they fire up so fast in the warm that it doesn't even make the cool starter sound

Aug 8, 2017 | 12:22 PM

JR-01

Le Mans Master

Joined: Sep 2013

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From: Wisconsin

Quote:

Originally Posted by 8VETTE7

On a cold start try turning the key to the ON position for a few seconds and listen for the fuel pump (behind your head) to stop running. Then see if the car starts right up. If yes, then the fuel pressure is bleeding off after the car sits for a while and the pump takes a few seconds to bring it back up to around 58lbs.

Is there a check valve or something in the pump to hold pressure after engine shut off. Does the pressure bleed back into the tank? Sometimes mine takes a couple seconds to fire after sitting for awhile, too. I try to let the gauges sweep before engaging the starter. That usually works.

Aug 8, 2017 | 12:26 PM

Pounder

1/4 mile/AutoX

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From: Buffalo Texas

Quote:

Originally Posted by JR-01

the injectors can drip or bleed off !!!

Aug 8, 2017 | 12:28 PM

Pounder

1/4 mile/AutoX

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From: Buffalo Texas

Quote:

Originally Posted by dbgoodwin

i suspect this as well.

I actually prefer the way both my corvette and my toyota pickup start in the cold, they fire up so fast in the warm that it doesn't even make the cool starter sound

I hardly ever hear my starter, love it when I turn the key and instantly hear the exhaust come to life !!!!

Aug 8, 2017 | 01:33 PM

royal flush

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Racer

Joined: Mar 2016

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Fuel pressure @ 58 lbs. Yes there is a check valve in a rubber line from the fuel filter to the tank that hold pressure to the injectors--i had my replaced few years back--mine is 01 z06--again its 1 second longer than instant start-Im being pickey-maybe needs injector cleaner-

Last edited by royal flush; Aug 8, 2017 at 01:35 PM.