Search results

  1. D

    Stupid 5.7 stumbling backfire saga

    Ok, I just can’t win and I’m running out of parts that can be changed. Background, bought the boat 1997 VIP with freshly overhauled engine. It runs strong with one exception. It backfires and stumbles around every so often. The tachometer didn’t work so as was pointed out to me I was chasing...
  2. D

    Ignition parts cross

    I have an older post out there that has probably outlived its usefulness. Basically, I have occasional backfiring and loss of power. Once I put a new tach on that worked I noticed the RPM signal from it was going crazy at the same time as the backfire issue. Basically it appears like the ECU is...
  3. D

    Oil pressure sender

    I’m sure a dumb question, but which oil sender on a 5.7 Merc is for the gauge? There is one under the starboard exhaust manifold and one back behind the distributor.
  4. D

    Correct riser gasket

    I pulled off my risers to inspect all of the internal cooling ports on the risers and manifolds. Everything looks good, which is a good thing. However I was somewhat shocked to see restrictor gaskets there instead of full flow gaskets. From my research I see there was warm and cold exhaust...
  5. D

    Can hot exhaust manifold cause intake backfire?

    I have a new to me 1997 VIP. The interior was completely redone and supposedly the engine completely zero hour rebuilt before I got it. Everything on/in it looks really good. At any rate I took the boys out this afternoon and it developed an intake manifold backfire when trying to throttle up...
  6. D

    Mercruiser 888 overheating

    I have a Mercruiser 888 (Ford 302) with cooling problems. The first day I took it out the engine didn't get up to any temperature but the manifolds got real hot. So the next day I do some investigating and found that there should be a separation plate between the elbows and the manifolds. So...
  7. D

    mercruiser engine coupler shaft depth

    I was wondering what the normal depth of engagement should be for the shaft that goes into the engine coupler. I have a mercruiser 888 which is a ford 302 motor. Thanks.
  8. D

    888 302 with 89 Alpha 1

    I have a 1989 VIP with an alpha 1 outdrive. It had a blown mercruiser 140 and I was thinking about regearing the outdrive and dropping an 888 ford 302 in. Besides changing the gear ratio to a 1.5/1 and changing the exhaust single pipe over to a y pipe for the 888, is there anything else I...
Top