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  1. Tail_Gunner

    2009 Sea Ray 185 4.3 TKS - a few questions.

    Looks like you did a great job kudos. Now to your dist, change it. The coast Gaurd looks with a keen eye just for that type of modification. If you have a fire the insurance companies will catch that mod and cancel coverage Now carry on and enjoy your new ride.
  2. Tail_Gunner

    Volvo Penta 5.0 GI PEFS engine intermittently not starting (but still cranking)

    Watch the video, just as he takes off the flame arrestor he points right at them....Ive tried to que the video at that moment.\ Actually, on a boat, that old a little crc contact cleaner would be of great value on most the inputs contacts etc etc. Opps not down the tbi while running lol geezz...
  3. Tail_Gunner

    Need help with parts list- converting TBi to old school carb

    Below should be your simple answer to wiring,
  4. Tail_Gunner

    2004 volvo penta 5.0 gl-e camshaft

    Hmm well here. 1. Soak this cam in vintage for the weekend. 2. Soak this cam in woodbleach for 24 hours. As crazy as that sounds both solutions will chemically dissolve any and all rust without effecting the cam hardened lobes surface. Once clean and if the lobes have not been pitted in any...
  5. Tail_Gunner

    2004 volvo penta 5.0 gl-e camshaft

    Just a question....did you remove your lifter's? if so what is the stock compression of this engine...it does make a difference in cam selection.
  6. Tail_Gunner

    2000 Volvo Penta 5.7GSi PEFS still running rich!

    That was not a bad idea, it should be clear Bob is a software tuner professional and John appears to be a hardware guy..at least his website presentation eludes to that. I assume you have that vacuum problem fixed..correct? It is time to stop thinking along the lines of a mefi issue, think...
  7. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Yes using hearing a leak in the valley is a reach, yet that article does touch base on such a occurrence... "Untraceable" vacuum leak Occasionally on engines that use the intake manifold to seal the lifter valley, you may experience a vacuum leak from the lifter valley area into the intake...
  8. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Fir Just a opinion: You have a combustion problem, in your initial post you stated high map voltage at idle with low vacuum https://www.crankshaftcoalition.com/wiki/Finding_vacuum_leaks There are several methods for locating vacuum leaks. If you suspect a vacuum leak on a carbureted or TBI...
  9. Tail_Gunner

    3 blade stainless vs four blade aluminum

    What I no longer see on this prop forum is the use of slip calculations. At one time that indeed was the benchmark for determining a props efficiency. That is too bad actually it did help clear up the air a smidge. Looking back it became apparent one could attempt to squeeze the blood out of...
  10. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    It has been years since I've played with TBI, in 07 I used a shop handheld light, very bright white I assumed it was neon I will now amend that to florescent...Age makes the mind wander...
  11. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Take a neon light as stated and have a gander down body when she's running. Notice the injectors slobbering all over the butterfly, perhaps watching the injector spray pattern during this off idle stutter/bogging might be eye opening. Spindles in the injectors can last for only so long before...
  12. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Is this manual a mefi 1/3 or 4 and or above, I have never seen a burst of enrichment in mefi 3. Aside from the cold enrichment circuit
  13. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    It would be quite wise to obtain the Volvo manual, there are a lot of commonalities in marine injection and a lot of small variations. It is not one size fits all, A bit lit like marine blocks are different from auto blocks....when in fact it was all due to what was on the shelf at the time...no...
  14. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    It is quite apparent you have a fuel problem, with that being said you also had this tbi modded by a professional enthusiast? The fuel pressure spring in a marine tbi is 18psi...auto is 13psi. I would give this guy a call and confirm what he has put in your unit. As to injectors the 17's I...
  15. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Now that is odd, i used them with great success in a 01 4.3 penta, Why the surging... rich? or lean? They are 5.7 cop car injectors..1994
  16. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Future reference....TBI injector 852956A1 Quite expensive... Standard motors cross-reference and they cross-reference to that part number. TJ17 Fuel Injector - New POP: C Per Car: 1 COMP/OE #:852956A1 COMP/OE:Mercruiser https://forums.iboats.com/threads/fuel-injectors.662109/
  17. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Actually if you take the fuel injection out of the loop and think along the lines of a carb...your hesitation would be an overly rich jet. There are numbers on these injectors, can you post them? The IAC does affect the vacum also.
  18. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    Factory intake and factory cam?, a new engine with 16 inches at idle is not up to par.I believe you have two problems being rolled up into one. Timing Vacum leak One thing you have not done is to take a neon light and shine it on the injector spray pattern while it is running. The Neon...
  19. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    You are quite correct with the ETC sensor, mefi uses a cold enrichment circuit. much like a mechanical choke.
  20. Tail_Gunner

    2000 5.7 GSi PEFS MAP sensor?

    You have a new engine, How did you set the timing Have you changed the factory injectors? Have you checked the fuel pressure regulator? Have you checked the fuel pressure itself? Have you checked The IAC/TPS sensors?.......................IAC does control vacum idle... Your vacum increases at...
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