Hard starting?
Thread Starter
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Hard starting?
Could a crappy (new, but Fram) fuel filter cause a hard starting problem?
Have to crank the engine for about 10-15 seconds when cold to get it to start, seems OK when hot.
Not much else changed recently but don't want to replace fuel filter if not needed or something else could be the cause. Thanks!
Have to crank the engine for about 10-15 seconds when cold to get it to start, seems OK when hot.
Not much else changed recently but don't want to replace fuel filter if not needed or something else could be the cause. Thanks!
Racer
Joined: Sep 2004
Posts: 258
Likes: 0
From: Coram NY
Could a crappy (new, but Fram) fuel filter cause a hard starting problem?
Have to crank the engine for about 10-15 seconds when cold to get it to start, seems OK when hot.
Not much else changed recently but don't want to replace fuel filter if not needed or something else could be the cause. Thanks!
Have to crank the engine for about 10-15 seconds when cold to get it to start, seems OK when hot.
Not much else changed recently but don't want to replace fuel filter if not needed or something else could be the cause. Thanks!
do you have a bogging when you hit the gas pedal?
I am still searching for the solution.
Tom
Race Director
Joined: Dec 2006
Posts: 10,383
Likes: 4
Symptoms fit a blown fuel pump relay.
Do you hear the fuel pump run briefly when you turn the key from off to run (but not start)?
If not, the fuel pump is being powered via the oil pressure switch once 5 PSI oil pressure is developed from the cranking.
I seriously doubt the new filter is the issue even though it is a Fram.
Do you hear the fuel pump run briefly when you turn the key from off to run (but not start)?
If not, the fuel pump is being powered via the oil pressure switch once 5 PSI oil pressure is developed from the cranking.
I seriously doubt the new filter is the issue even though it is a Fram.
Instructor
Joined: Jun 2006
Posts: 175
Likes: 1
From: Cave Creek Arizona
Check fuel pressure before changing anything. Changing the relay is a hassle.
Put a guage on test port and turn key on, see if pressure comes up right away. Try 2 or 3 times if pressure come up every time the relay is probably ok.
Check to see if pressure holds after key is turned off. If pressure drops off start trouble shooting. If you have an FSM there is a procedure for testing this problem. If you need to start swapping parts, I would start with the FP Regulator it is the easiest thing replace (10 mins tops). It also could be a leaking injector (fairly easy to check and free) or bad fuel pump (harder and more expensive).
I just worked my way through this and it turned out to be the regulator very easy to change.
Put a guage on test port and turn key on, see if pressure comes up right away. Try 2 or 3 times if pressure come up every time the relay is probably ok.
Check to see if pressure holds after key is turned off. If pressure drops off start trouble shooting. If you have an FSM there is a procedure for testing this problem. If you need to start swapping parts, I would start with the FP Regulator it is the easiest thing replace (10 mins tops). It also could be a leaking injector (fairly easy to check and free) or bad fuel pump (harder and more expensive).
I just worked my way through this and it turned out to be the regulator very easy to change.
Thread Starter
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Thanks
Check fuel pressure before changing anything. Changing the relay is a hassle.
Put a guage on test port and turn key on, see if pressure comes up right away. Try 2 or 3 times if pressure come up every time the relay is probably ok.
Check to see if pressure holds after key is turned off. If pressure drops off start trouble shooting. If you have an FSM there is a procedure for testing this problem. If you need to start swapping parts, I would start with the FP Regulator it is the easiest thing replace (10 mins tops). It also could be a leaking injector (fairly easy to check and free) or bad fuel pump (harder and more expensive).
I just worked my way through this and it turned out to be the regulator very easy to change.
Put a guage on test port and turn key on, see if pressure comes up right away. Try 2 or 3 times if pressure come up every time the relay is probably ok.
Check to see if pressure holds after key is turned off. If pressure drops off start trouble shooting. If you have an FSM there is a procedure for testing this problem. If you need to start swapping parts, I would start with the FP Regulator it is the easiest thing replace (10 mins tops). It also could be a leaking injector (fairly easy to check and free) or bad fuel pump (harder and more expensive).
I just worked my way through this and it turned out to be the regulator very easy to change.
Thread Starter
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Thx
I haven't noticed bogging but I don't usually drive the car right off a cold start anyhow I normally give it at least a few minutes...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Thread Starter
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
Where
Check fuel pressure before changing anything. Changing the relay is a hassle.
Put a guage on test port and turn key on, see if pressure comes up right away. Try 2 or 3 times if pressure come up every time the relay is probably ok.
Check to see if pressure holds after key is turned off. If pressure drops off start trouble shooting. If you have an FSM there is a procedure for testing this problem. If you need to start swapping parts, I would start with the FP Regulator it is the easiest thing replace (10 mins tops). It also could be a leaking injector (fairly easy to check and free) or bad fuel pump (harder and more expensive).
I just worked my way through this and it turned out to be the regulator very easy to change.
Put a guage on test port and turn key on, see if pressure comes up right away. Try 2 or 3 times if pressure come up every time the relay is probably ok.
Check to see if pressure holds after key is turned off. If pressure drops off start trouble shooting. If you have an FSM there is a procedure for testing this problem. If you need to start swapping parts, I would start with the FP Regulator it is the easiest thing replace (10 mins tops). It also could be a leaking injector (fairly easy to check and free) or bad fuel pump (harder and more expensive).
I just worked my way through this and it turned out to be the regulator very easy to change.
Melting Slicks
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
