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  1. vroom ZOOM

    1995 5.7 Mercruiser no start, no fire.

    Massive lean backfire through the carb.
  2. vroom ZOOM

    1995 5.7 Mercruiser no start, no fire.

    Well, it turns out there was a blown intake gasket that prevented it from starting.
  3. vroom ZOOM

    1995 5.7 Mercruiser no start, no fire.

    I pulled a plug and it is sooty and dry. I set the batteries to charge and will give it a try tomorrow.
  4. vroom ZOOM

    1995 5.7 Mercruiser no start, no fire.

    Hello Ive been scratching my head over this one. 1995 5.7 with 4bbl carb and thunderbolt ignition. I am not too familiar with these things but I still am surprised why it won't run. The boat ran fine last week. This time it cranks and intermittently fires, but won't run. The accelerator pump...
  5. vroom ZOOM

    Velvet drive dipstick tool

    Hello once again. I was doing a bunch of oil changes on velvet drives and they all have the stupid screen that tapers down around the dipstick, which means I have to use a really thin tube to suck the trans fluid out. It takes a really long time with the thin tube, and I'd like to buy the...
  6. vroom ZOOM

    5.7 MPI Misfires Under Load

    your numbers look good, however, I recommend to check the timing. I had a boat that would fire out the intake like an AK-47. Timing was off. After setting to the required location, no more issues.
  7. vroom ZOOM

    5.7 MPI Misfires Under Load

    Your IAC readings look perfect. It is near full open at 3500 so if you close the throttle rapidly, the engine won't stall, and has some air to burn the still flowing fuel with. If you are having a backfire under load, check your ignition timing and compression. Could be a hanging valve or timing...
  8. vroom ZOOM

    Oil filter socket

    Hey everyone I found myself doing a bunch of oil changes on mercruisers this year. (about 4 per day). A strap wrench doesn't always work the best. Does anyone remember what size oil filter socket mercruiser oil filters use? Thanks.
  9. vroom ZOOM

    Any tricks for wire corrosion

    heres a pic
  10. vroom ZOOM

    Any tricks for wire corrosion

    Older? how does 2017 sound? oof! I am basically stuck with metri-pak 280 plugs, these plugs are the only ones compatible with my fuse box. They do have waterproof seals, but water somehow made it past those seals. And yes, it was saltwater. Some wires are shiny copper but others are turning...
  11. vroom ZOOM

    Any tricks for wire corrosion

    It says it is marine grade on the jacket, but it sure as hell isn't tinned. I will post some pics of the wires later today.
  12. vroom ZOOM

    Any tricks for wire corrosion

    Hi, I am working on the wiring on my boat. Some plugs got wet and the wires started to tarnish. No green corrosion, but the wires do have that black oxide coating on them. 1. Is there some kind of crap I can buy that will soak up the wire and stop the corrosion? 2. How long will these wires...
  13. vroom ZOOM

    Etec evinrude 150

    Probably... idk much about the carbed engines though - I only mess with E-TEC. Maybe I'm part of the wierd crowd that likes the world's hated engines - HPDI, optimax, ETEC. LOL For the OP: Here is a couple of diagrams of the recirculation system. Be careful when working on the oiling system as...
  14. vroom ZOOM

    Etec evinrude 150

    That is caused by bad recirculation check valves. Easy fix, just buy the new oil recirculation check valves or take the old ones apart and clean then out. They sometime like to stick. They act like a pump which sucks the oil from the bottom of the crankcase and puts it in the top.
  15. vroom ZOOM

    1997 Landau 1650 need more speed

    Try a jackplate. May get a few more mph out of it. Secondly, if you run light weight all the time, decreasing blade area will decrease propeller blade surface drag and give some more rpm and speed. You are currently propped for the middle of the rpm range, which is exactly the peak of the power...
  16. vroom ZOOM

    yamaha fourstroke crank bearings

    I wish it was that easy... first of all, ford doesn't sell those bearings separate, they only sell short blocks. Second, the ford markings don't tell me anything, as they don't have colours. There are two size bearings that came out of the old motor, 2 03 R and 1 03 W. I am pretty sure the 2 03...
  17. vroom ZOOM

    yamaha fourstroke crank bearings

    Well, I got a few updates for you all in case someone is in my situation. The manual says 0.7 to 2 thou clearance on the mains. I figured if I would be around 1.5 that would be golden. I went ahead and made mistake #1, I ordered some ACL race bearings for a 2.3 Duratec/mazda cx-7 (the bearings...
  18. vroom ZOOM

    Timing on 1990 Merc Black Max Carb 2 strk 175 - hope Fast Bullet weighs in

    All I can say (may be obvious) is that high idle rpm is caused by two things: 1. carb settings (too lean or throttle not fully closed) 2. too much timing advance. You could be dealing with both.
  19. vroom ZOOM

    trolling motor

    Do you fish near the shore often? Do you fish in very rough water? Are your depth finders lowrance, garmin or humminbird? Need some more info to give a better suggestion.
  20. vroom ZOOM

    yamaha fourstroke crank bearings

    One more question - about oil clearance. Should I just follow the rule of thumb for 1" diameter 0.001" clearance, or should I go a little up or down for outboards (since they run at high rpm mostly)?
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