1998 502 Mag Wont Start
#11
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When you replaced your fuel filter, did you fill it COMPLETELY up with fuel? I've seen my 454 MPI be very cranky, and even not want to start and run, if there was ANY 'air' left in the filter. I always thought it would sort of self-purge by objective evidence indicates that isn't so.
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Baja 252 Islander
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The following 2 users liked this post by bajaman:
Gimme Fuel (03-23-2022), Noles1 (03-22-2022)
#12
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SB (03-21-2022)
#13
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Last edited by SB; 03-22-2022 at 12:55 PM.
The following users liked this post:
Griff (03-22-2022)
#14
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#15
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When you replaced your fuel filter, did you fill it COMPLETELY up with fuel? I've seen my 454 MPI be very cranky, and even not want to start and run, if there was ANY 'air' left in the filter. I always thought it would sort of self-purge by objective evidence indicates that isn't so.
#16
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When you replaced your fuel filter, did you fill it COMPLETELY up with fuel? I've seen my 454 MPI be very cranky, and even not want to start and run, if there was ANY 'air' left in the filter. I always thought it would sort of self-purge by objective evidence indicates that isn't so.
#17
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While waiting for fuel psi tests…..
He said engine runs fine until shut off again, so filter would be full while running. Filling filter is not his issue, but you guys made great point for all. Electric pumps will typically cavitate and not pull fuel when filter/separator not filled.
OP- does engine crank over fine or does it labor ? Are batteries fully charged and holding charge ? They should measure around 12.6 with engine not running and not charged for atleast few hrs.
He said engine runs fine until shut off again, so filter would be full while running. Filling filter is not his issue, but you guys made great point for all. Electric pumps will typically cavitate and not pull fuel when filter/separator not filled.
OP- does engine crank over fine or does it labor ? Are batteries fully charged and holding charge ? They should measure around 12.6 with engine not running and not charged for atleast few hrs.
Last edited by SB; 03-22-2022 at 07:38 AM.
#18
Were doomed!
Charter Member
If its cranking slower then normal i'd be looking at getting the battery tested to make sure its up to par and then inspect the main batt cables for corrosion...
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-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#19
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Consider looking at gas to see if you see any seperation or rust from tank. Really a 1998 boat probably at end of fuel system life. If not been done already I'd replace all the fuel lines.
#20
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Thanks for all of the replies so far. I have noticed that it seems to be cranking more slowly/labored than normal. I will put the batteries on the charger and see if that makes a difference. The battery cables look good, I recently installed a new battery switch and cleaned up any corrosion.
I should be able to check the fuel pressure this afternoon, the weather is finally clearing up.
Any ideas why the plugs are so black? Could that be related to this issue?
I should be able to check the fuel pressure this afternoon, the weather is finally clearing up.
Any ideas why the plugs are so black? Could that be related to this issue?
Last edited by 502istheway; 03-22-2022 at 10:28 AM.