Search results

  1. F

    1997 5.7L thunderbolt ignition. Slow crank

    Okay now I feel dumb. I cut open the wire loom that runs along the stringers. The battery is grounded to the flywheel housing. Then another cable attaches to the battery which connects to the other batteru. That battery cable is the one that was melted and really bad shape. So I think what...
  2. F

    1997 5.7L thunderbolt ignition. Slow crank

    But yeah the starter grounds through the mounting bolts to the block right? So the batteries have to be grounded in some way, I wonder if it's one of those smaller wires on the grounding strap comes off of that into that wire loom along the stringers and then onto the battery Because now that I...
  3. F

    1997 5.7L thunderbolt ignition. Slow crank

    Yeah I think my next step is to remove the house battery completely out of the equation , then hook my f starting battery directly to the starter with a fresh positive cable and a fresh ground that's actually grounded to the engine. And see if my cranking returns to normal. If it doesn't that...
  4. F

    1997 5.7L thunderbolt ignition. Slow crank

    Yeah that's what I was thinking, but my ground wire attaches from my bank 1 battery goes around the engine goes to some kind of terminal coupler directly behind the engine (But just floating it's not attached to the engine, it was attached to the firewall behind it) , then that wire goes to a...
  5. F

    1997 5.7L thunderbolt ignition. Slow crank

    This is my 16th year with the boat And I've never messed with the wiring , So it's been like this ever since I've owned the boat, I just figured I should redo all my battery cables to try to eliminate that as the problem. And that's when I found they just connect to each other. Also when I crank...
  6. F

    1997 5.7L thunderbolt ignition. Slow crank

    Oh also the ground wire that loops behind the engine, it appears they are joined with some sort of battery terminal in the Middle with a bolt through it or something I can't really tell because the insulation melted to it. I think it's two eyelets ends of each cable being adjoined with a...
  7. F

    1997 5.7L thunderbolt ignition. Slow crank

    Hi guys Okay I've done a lot of research on the internet and iboat, and I'm stumped still. Hoping someone could steer me in the right direction with my individual problem. Took the boat out of storage from winter, everything fired up just fine, Strong crank and fired with minimal effort. went...
  8. F

    Stumped. No spark.

    OK thanks for the explanation. I just thought maybe the button was stuck lol. I got it figured out. You guys are awesome thanks for your help
  9. F

    Stumped. No spark.

    It did explain ! I didn't realize that those 2 Gray wires were part of the system, somebody told me those go to the tach and the lanyard safety switch and to just remove them and see if it will start. I put those wires back on and it fires up
  10. F

    Stumped. No spark.

    OK thanks I'm going to read through this tonight. I put a new distributor cap, rotor and Ignition sensor in , still no spark. I noticed that 50 amp red button doesn't really click like a button like it's stuck. Should that click? If I connect the 2 terminals will that bypass it? Maybe that has...
  11. F

    Stumped. No spark.

    I got it off thank you. The sensor contact was rusted and corroded, The inside of the button also had rust on it. I tried hitting everything with sandpaper Is to clean the surfaces, thinking I might at least figure out that that is the problem so I can order new parts. But it's still didn't...
  12. F

    Stumped. No spark.

    Yeah I see the sensor, but the rotor seems to be stuck in place ,do they seize up? Do I just need to pry it out of there?
  13. F

    Stumped. No spark.

    Wow... I wouldn't have thought that , that's why I asked , thanks. So how do I get the Ignition sensor out of the distributor?
  14. F

    Stumped. No spark.

    So I'm using a test light with voltage. And when I put the test light on it , it does read 11.8 for a second but then it immediately drops down to 10.3 I guess because of the load of the test light. Is that OK? I'm just wondering if the sensor's not getting the proper voltage to it
  15. F

    Stumped. No spark.

    Guys I am stumped and I'm not getting spark and Ignition systems are my weakness. Before I took the boat out on the lake for the 1st time this year I ran it on muffs and it ran great, So I headed to the gas station filled it up with gas and dumped it into the lake. It fired right up, but...
  16. F

    Can someone help me figure out why my engine is flooding?

    I have a 1997 5.7 350 MerCruiser, the carburetor is dumping gas and it floods immediately, even from startup on the trailer to the dock it floods. I I rebuilt the carburetor last year and it was better, but it got super bad this year so I just replace the entire carburetor assembly. Still the...
  17. F

    Little help, I'm stuck on the water.

    Engine is a 1997 Mercruiser 5.7 2bbl. First outing of the year, I'm sitting on the water now, everything was running fine, and then when running at cruising speed , It randomly felt like I lost a little acceleration. when I slowed down the boat died. Go to start it back up, it started but died...
  18. F

    Hard cold start carburetor rebuild

    97 mercruiser 5.7 260 horsepower v8, 2bbl mercarb. So, I rebuilt this carburetor after having warm start problems. I got it out on the water this weekend, and it seems much better it fired up every time , even after using it for extended period Of time. However I spent the night on the lake...
  19. F

    Fuel dripping from VenturI cluster

    2 bbl mercarb on a 5.7 v8. Boat fires up fine when cold, but it seems to be flooding as it's running. Because when I shut it off , it does not want to restart. I can look down in there and see a pretty significant amount of fuel dripping from venturi cluster ( even has a tiny drip 10 minutes...
  20. F

    Removing exhaust elbows.

    Hi guys, I recently removed my engine. To do so, I loosened my exhaust elbows from the 3-inch Riser block ( not from the manifold) to lift up an inch or so so I can get the rubber hoses off. I could not completely remove the elbow because of my engine bay clearance. I removed it enough to give...
Top