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    8.7 Volts at the Coil

    Update 2: Alright so I have 12.6 coming out of the I terminal at the switch. Found the harness for the kill switch and have 12.54 there with .01 ohms. Have 11 volts at the kill switch and 10.54 at the harness that heads back to the engine where I'm seeing 8.6 volts at the coil. I'm starting to...
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    8.7 Volts at the Coil

    Update: Measuring around 28 ohms at main breaker. With a loose pole. Will replace. Found a loose ground at the main bus too. Now have 8.8 volts at the coil. Tach was also loose at the I terminal. Cables at the starter solenoid are very corroded. Will clean. Measuring 7-8.5 ohms at the perko...
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    8.7 Volts at the Coil

    I meant the sensor inside the distributor. The module looks to be grounded through the harness.
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    8.7 Volts at the Coil

    Hey man, this is a different boat, not mine, but a client's. It is a 1997 WellCraft with a 5.7 2 BBL Mercarb. The ignition is Thunderbolt V. I have gone through this diagram. It is helpful, but doesn't account for low voltage. I'm going to check all of the grounds, tach connections, and the...
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    8.7 Volts at the Coil

    The ignition sensor*
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    8.7 Volts at the Coil

    How is the ignition module grounded?
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    8.7 Volts at the Coil

    It's brand new.
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    8.7 Volts at the Coil

    It's attached to the main engine ground.
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    8.7 Volts at the Coil

    I'm going to check the main bus bar connections behind the engine. The ones behind the helm are all snug. I will double check the tach, but like I said, I bypassed it to rule out a fault. I also tested the kill switch by bypassing it and it's fine. The wiring there is all heat shrunk and is...
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    8.7 Volts at the Coil

    I think I'll check the main engine grounds and the connections at the perko switch. I agree something such as this could be up.
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    8.7 Volts at the Coil

    I don't know. How do I test?
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    8.7 Volts at the Coil

    I have it but it's so confusing and hard to discern.
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    8.7 Volts at the Coil

    At my wit's end with a boat. 1997 5.7L Vortec Mercruiser. 2 BBL carb. Thunderbolt V ignition. After doing a top end rebuild, it won't start...VERY weak spark that dies out immediately due to the low coil voltage of about 8.7 with key on and 6.5 while cranking. Batteries are both new and read...
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    Sea ray sundeck 240 won’t rev passed 2000rpm

    IAC? MAP sensor?
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    1995 Chaparral 2550 SX Refit and Restoration

    After a few weekends of leaving the boat in the water and using her, I had noticed that the drive and transom assembly paint was chipping further and the metal was corroding a tad bit. And so, I decided to clean, sand, clean, prime with zinc chromate, and paint the drive. I also wanted to...
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    1995 Chaparral 2550 SX Refit and Restoration

    We also took her out the following day and she continued to run very well. Did a 50 mile cruise from Rhode River over to our home in Annapolis, before cruising almost the entire length of the Severn River and back. Seas were rough so we were really able to put her to the test. In the middle of...
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    1995 Chaparral 2550 SX Refit and Restoration

    Unfortunately, we were not able to leave for the test run until late in the afternoon as I was tying up loose ends at the dock, but we did get out and put her through her paces and I am happy to report that she seemed to run really well! Here are some pictures of Saturday the 11th, 2020, the...
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    1995 Chaparral 2550 SX Refit and Restoration

    Good question Ted! I believe the older Gen IV and Gen V 454s like this one are 10° BTDC. Whatever setting I set it to was on the engine cover.
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    1995 Chaparral 2550 SX Refit and Restoration

    Well, guys I was able to paint the intake and get it back on. While I was at it, I installed all new belts, new impeller, new plugs and wires, new distributor cap and rotor, new fuel line from the tank, replaced the fuel filter, changed the oil and filter as well as the gear lube. She is all...
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    1995 Chaparral 2550 SX Refit and Restoration

    The last few days have been very productive...I got the broken bolt out which was fortunately not flush with the block after taking the cylinder head off. I was able to twist it off with a pair of vise grips. After chasing the threads with a bolt, I then reinstalled the head and was able to get...
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