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Joe, Marine Mechanic
Category: Boat
Satisfied Customers: 7251
Experience:  ASE, electronics, Marine mechanical and electronics, pwc, wiring, all around repair tech,
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My 4.3 gxi turns over but does not fire after sitting in

Customer Question

my 4.3 gxi turns over but does not fire after sitting in humid conditons for several weeks.spark at plugs and fuel up to the injectors
Submitted: 1 year ago.
Category: Boat
Expert:  Joe replied 1 year ago.
Thank you for allowing me to assist you, my name is ***** ***** I will be happy to assist you with your concern today.
Check spark via an spark tester, in-line is best, ***** ***** than one wire, for instance it's best to check all and be sure all have good strong spark, if so then check fuel pressure (just checking for fuel is not enough) must check actual pressure, next check compression and then next check injector pulse, if none of the above then need to connect a scan tool and check tps, iac and other sensors (if fuel injected). Spray some starting fluid into the throttle bore and if it starts/stalls then you know it's a lack of fuel. Check battery voltage is good and battery load tests good.
Thank you!
- Joe
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