trashboat's latest activity

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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Compression test was good, all cylinders around 150 or so. Checked timing again, same results. I tried different rotor I had laying...
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Checked spark at coil with gap tester and have strong spark, plugs I just verified spark with an in line tester. Intake hasn't been off...
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Okay I did try this yesterday while I was messing around and it still didn't fire, can't remember if it stopped backfiring or not though.
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Cylinder 1 is TDC, rotor pointing at cylinder 1 plug wire and timing mark at 0 degrees. That would the compression stroke right?
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Cylinder 1 is TDC, rotor pointing at cylinder 1 plug wire and timing mark at 0 degrees. That would the compression stroke right?
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Correct it's lined up with #1 spark plug wire on the cap, with cylinder 1 piston at TDC
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Yeah I poured some fuel down the carb and gave it a little sniff of ether and it sputtered/backfired the same. If compression is good...
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Correct I have spark at the plugs, and the engine cranks strong and sounds as it should. I don't believe it ever had any compression...
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Firing order is correct, set the base timing with cylinder 1 at TDC, distributor rotor pointing at cylinder 1, and lining up 0 degrees...
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Verified this today, going to pull the plug for cylinder 1 tomorrow to put cylinder 1 at TDC to set base timing.
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    New sensor was connected the same as the previous two. Yes it's backfiring while cranking .
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Replaced the sensor again and have spark now, third time is the charm. Still won't fire but I suspect that's a timing issue, had it...
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    I only tried it while grounding the white and green wire, but yes it's connected to the coil and grounded. I can try it while cranking...
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    If you mean the distributor sensors, the first one was but the one that's in there now is a quicksilver.
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    trashboat replied to the thread 1990 mercruiser 4.3 no spark.
    Correct, grounding the wht/grn rapidly I have spark on my spark gap tester. Verified firing order, rotor rotates and have correct...
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