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1976 Tahiti Jet Boat

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Claybo58

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« on: July 15, 2017, 07:21:20 PM »
I met a kind 75-year-old gentleman at the lake who has a '76 (or '72?) Tahiti jet boat that he couldn't get running. I offered to help and in a few minutes we did get it running, and I followed him in my boat in case it quit. It got slower and slower until it stopped and I towed him back.  He claimed it had the wrong ignition switch (he just changed) and he was told by his mechanic that it drained the battery.  Now the boat will not hit a lick even with using starting fluid.  I did see a spark on the plug. I could see that the accelerator pump was pumping fuel into the carberator, but just a drip instead of a spray. It has a Hardin Marine motor with a 4 barrel Holly carb and a Berkley jet drive.  The boat has not been in the water for 13 years (other than when I took him out). I'm pretty good with engines and understand about fuel, air, and ignition.
Baffled about why I cant get it started with starting fluid. Could it be timing? Old gas? What else should I check?



dat1dsm

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« Reply #1 on: July 16, 2017, 01:03:46 AM »
Did he drain the old gas from the tanks and carb before taking it out after sitting so long? Id try running fresh gas into the fuel pump/ carb by feeding it from a spare gas jug.

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Claybo58

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« Reply #2 on: July 17, 2017, 04:50:37 PM »
 I have drained the fuel out of the tanks. There may be some water in the bottom that Im going to try and purge out.
I haven't yet figured  out what size engine it has. It may be a 460 ford. Just not sure. Anything I could check to know for sure?

mash on it

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« Reply #3 on: July 17, 2017, 06:03:06 PM »
3 maybe 4 options on motor- Olds, Big Block Chevy, Big block Ford, or...Small block Chevy.

Where is the dizzy? front or rear?

Suck, squeeze, bang and blow- always do a compression test on an unknown motor.

What dizzy? points? electronic? HEI? Magneto?

Fuel quality, then volume and pressure?

Has a plug been pulled?

Thats a start.

Dan'l
CJ/RR 212...under construction  "Pistol Annie"

nevadasam

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« Reply #4 on: December 08, 2017, 05:46:52 PM »
I let my 68 short bed sit for 4 years,with a little under quarter tank.thinking just add good clean fuel and it will be all good.hell no,finally drains tank pulled the carb off.the carb was so gummed up about a 1/16 of an inch of crud from the gas.could not clean it up enough so I bought another carb.ran great till I sold it off.


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