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  1. Q

    1996 Mercruiser GenII 4.3 TBI Idle problem

    The video "Fun Times" posted for me had just about the same symptoms as mine and they stated that a fuel pump and regulator fixed it. I was skeptical because I just couldn't wrap my head around how that could cause my symptoms but I didn't have the tool to test it properly and they were about...
  2. Q

    1996 Mercruiser GenII 4.3 TBI Idle problem

    Thanks for the replys, I've been a professional auto tech for 30 years and this thing has reduced me to a parts hanger.... I ordered a fuel pump and regulator seeing that it's the last two items I haven't replaced. I did learn how to check and clear codes. It had a knock sensor code, and two I...
  3. Q

    1996 Mercruiser GenII 4.3 TBI Idle problem

    Well I redid the intake to no avail but at least it is ruled out. It is definitely something telling the the IAC bad information. If I shut the key off and let the IAC "park" and unplug the IAC it will idle on restart and not roll up and down when revved up and returned to idle. After the...
  4. Q

    1996 Mercruiser GenII 4.3 TBI Idle problem

    IAC has been replaced with no change. It is cycling in and out while the idle is rolling, If I unplug it while it is high it'll stay at that RPM. Symptoms are the same with linkage connected or disconnected. TPS has 5 volt reference, ground and sits at .7 vdc at closed throttle
  5. Q

    Stuck on dry land year 3

    Here's what I would try, First remove the belt(s) and try cranking to see if the alternator or something else is dragging. Check the ground connection at the motor side of the cable and the actual cables themselves. Should probably try replacing the starter instead of rebuilding it.
  6. Q

    1996 Mercruiser GenII 4.3 TBI Idle problem

    Hello All, First here's the symptoms that I'm experiencing, The engine on cold start and sometimes once it has settled will Idle perfectly without skipping a beat, Once I return the engine to idle it will roll or hunt continuously from 500 to 1800 rpm, until it stalls or on the rare occasion...
  7. Q

    81 60hp Johnson lower carb won't go until you spray carb cleaner

    Hello! I have been working on this dinosaur for a friend. His complaint was that the boat would not throttle up. last year I remanned the carbs and he never used the boat. This year he had the same problem so I had him bring it to the pond it was very hard to start but cycling the choke I was...
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