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  1. alldodge

    No spark when warm

    Re: No spark when warm It would help to know the year of the 5.7, a serial number works good. If the engine will crank there are no switches down stream so to speak to stop the spark. The oil pressure switch will not stop you from starting. You mention Thunderbolt IV so here is the trouble...
  2. alldodge

    Need Correct Fuel Filter

    Re: Need Correct Fuel Filter Not knowing what year your boat is I'll guess that it looks like this 87-89 3.0 The part number for the kit is 35-49088Q2
  3. alldodge

    What is the tollerance on a V-drive prop shaft

    Posted this in the non-engine and received nothing, then figured it deals with a Merc motor and velvet drive so maybe it should go here Buddy has a 99 Maxium 3700 and when they pulled it out the port side prop shaft was sitting on the bunk between the hull and the strut. It was put back in...
  4. alldodge

    V-Drive prop shaft Tollerance

    Buddy has a 99 Maxium 3700 and when they pulled it out the port side prop shaft was sitting on the bunk between the hull and the strut. It was put back in, shifted and pulled back out. Put a dial indicator about a 13 inches from the hull and it showed .024 on the port side and .015 on the...
  5. alldodge

    82 searay 260 mercruiser having problem with coil and distributor getting fire

    Re: 82 searay 260 mercruiser having problem with coil and distributor getting fire Run it through this troubleshhoting process and see what comes out
  6. alldodge

    Mercruiser 3.0 not starting/ no spark

    Re: Mercruiser 3.0 not starting/ no spark Don't know if you you have a thunderbolt 4 or 5 ignition so I'll give you both. Run through this and see where it takes you
  7. alldodge

    Bilge pump wiring

    Re: Bilge pump wiring The bildge should be connected direct from the battery and through a float switch back to ground. Most bildges have a secondary connection to a switch where the pump can be turned on from the dash. The foot pedal thing is the float switch. Here is a pic, have a look and...
  8. alldodge

    Exhaust manifolds and risers water line upgrade help

    Re: Exhaust manifolds and risers water line upgrade help This is more of a puzzler then first thought and I'm glad you looked further into it. New exhaust circulation systems receive water into the top of Thermostat (TS) housing which passes through to the engin water pump and to exhaust...
  9. alldodge

    Running hot at low speed

    Re: Running hot at low speed Looks like quite a bit of rust in the channels, try to verify there is no other scale build up or restriction. The gasket is the wrong type, it should seal off water from entering exhaust gases. See item 3 Hope this is what item 1 is above The cooling system...
  10. alldodge

    starter fuse wiring

    Re: starter fuse wiring Not know what year this should work
  11. alldodge

    5.7 G.M. Water Pump Pulley Size

    Re: 5.7 G.M. Water Pump Pulley Size The original part size was 5.5 inch and was replaced by Mercury to a 7 inch http://www.mercruiserparts.com/bulletins/018/04//1997/EN_04.PDF I don't think your overheating has to do with the size of the pulley. I am assuming you have an Alpha drive and...
  12. alldodge

    MerCruiser 4.3L Ignition Issue - Help Needed

    Re: MerCruiser 4.3L Ignition Issue - Help Needed Your going to need volt meter. Turn the key switch to run and see if your getting 12 volts to purple wire on the posative side of the coil. If 12 volts is present next check the Yel/Red wire going to the slave solenoid and have someone turn...
  13. alldodge

    lower cable problem

    Re: lower cable problem The only thing I can find is the shift cam which isn't flat. It is item 33 Do you have a pic
  14. alldodge

    Help with Mercruiser ignition 1994 series, new motor

    Re: Help with Mercruiser ignition 1994 series, new motor The serial number comes out to be 5.0L (2 BBL.) GM 305 V-8 1998-2001. As before there are differences between 5.0 and 5.7 engines and require different ICM's. Don't know if you have a TB4 or 5 but I'm guessing 5 here is both
  15. alldodge

    Rear motor mount bolt loose

    Re: Rear motor mount bolt loose There should be a spacer, 2 flat washers, one lock washer and a lock nut .500 by 20 thread
  16. alldodge

    Mercrusier 4.3 electrical problem; ignition fuse & fuel pump

    Re: Mercrusier 4.3 electrical problem; ignition fuse & fuel pump I take it your talking about the 50amp push button breaker and not a actual fuse, right? First I wouldn't say your oil pressure switch is bad. You can jumper it and the pump will not run so if that was part of the problem the...
  17. alldodge

    Gimbal housing anode and transom gasket

    Re: Gimbal housing anode and transom gasket Looks to 1/4 20 and 1.375 long. 1 98869A17 ELECTRODE ASSEMBLY (BLACK) 98869A11 $126.58 $114.12 1 1 98869A14 MERCATHODE SYSTEM (OYSTER) $181.59 $163.70 1 2 10-69067 SCREW, (.250-20 x 1.375), ELECTRODE $1.70 $1.66 2 3...
  18. alldodge

    385HP 454 Rod Knocking

    Re: 385HP 454 Rod Knocking Some tmes you just have to go back to the basics and they have the answer. When the engine was replaced the mechanic put in the wrong plugs. They installed AC 41-803 instead of NGK BPR6FS or AC MR43T. From the pic (Port 41-803 and Starboard BPR6FS) we can easily...
  19. alldodge

    385HP 454 Rod Knocking

    Boat is a 370 Regal with twin 385HP 454's and belongs to a friend. Engines had around 300 hours on them when the port engine had a rod knocking. Port engine (S/N 0L086675) was replaced with a new crate motor and everything is running fine again. My friend is real meticulous and is a bit OCD...
  20. alldodge

    1974 Mercruiser trim question

    Re: 1974 Mercruiser trim question Its not likely you can rebuild the pump valve body. Not that it can not be done just never heared of someone doing it succesfully. The new pump number 93247A7 which replaces yours.
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