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  1. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    i did that on saturday as noted in post 11. the boat does finally get up on plane and ive had it up to around 42-4400 rpms, but very sluggish getting there, i ran the boat on the external tank and it sucked down a gallon of fuel,. i changed back to the boats tank and it continues to run the...
  2. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    temp was within specs, 154 degrees , warmed up according to the scan tool
  3. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    boat ran great earlier in the season, it has sat a while, lots of rain and busy schedule. finally got out to run it and this is where i am at
  4. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    Empty
  5. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    I'm also hung up on that cam retard spec of negative 4.5 Anyone have this reading on their unit?
  6. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    This engine hasn't been touched in years. I don't see how the timing can be off when the distributor is a lock down 1 position clip in other words you can't adjust it and still be bolted in unless it was pulled and shaft rotated.
  7. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    ok, back from testing, new test gauge reads 48 with regulator connected and 54 with the vac line off. seperate fuel tank made no difference. i stil lthink the fuel pressure should be higher yet i am prety sure these regulator as set for 52psi bypass so if thats the case, how can the pressure...
  8. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    yeah i am retesting with a different gauge to confirm pressure readings cause it shoudl be between 50-60 psi so ill see what developes
  9. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    fuel pressure is @ 42psi with regulator connected and 48 with vaccuum line off. compression range is 155-165 on all 6 the injectors were replaced with new gm injectors, same part # i am going back today to check the fuel pressure with a different gauge to confirm findings, i am also bringing a...
  10. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    throttle plate is wide open @ fulll throttle, no belt dust, flame arrestor was not in place for testing. yes it revs in neutral
  11. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    new new to me boat, haven't run a mechanical compression test but did one with the scan tool and all cylinders reacted the same. fuel filter new with module, fuel sample taken and looks clean and is fresh. tryed the trim all the way down on take off and 1/2 way up, both same results. and...
  12. 2

    2009 4.3 gxi-j cant get it over 3k rpms

    i have this boat that will not get out of its own way. and its kicking my ass, i hope someone else has had a similar issue. it feels llike i have 6 fat guys sitting in the rear of the boat. the engine has 150hrs on it, the fuel pump module was replaced due to low pressure and noise, the screen...
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