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Thanks for the reply! I was using rotella 15-40 woth fl1a motor craft filter. Last winter freeze came before my mechanic had time so i winterized myself and he told me I used the wrong oil and...

1990 Supra comp with pcm 351 Ford.

Recently got fed up paying 120 an hour for minor maintenance. I’m not sure what is in the tranny, but last year my mechanic had charged $550 for impeller, plugs,...

Boat info:
1990 Supra comp with pcm ford 351

Symptoms: runs great but after running if you turn ot off to sit for a while when re started it will overheat. If you rev it in neutral it cools off....

When its running it generally stays right at 175, but the other day when it was hot out my girlfriend was spinning circles in the thing and it got right around 180-181. So is it safe to say there are...

HISTORY:

Got the boat with a bad impellor and a non functioning temp guage.
When I replaced the impeller it was missing fins. I took apart the thermostat housing and there was nothing in there. I...

When I stopped I went to touch the exhaust elbows and it instantly burned my hand. It was boiling water inside I could hear it. It was smoking a little out the hose coming from the oil toward the air...

Yeah I put it in upside down. Once I fixed it it seemed to cool fine but now it’s steaming after I shut it off for a while then go to take off. Afraid I might have fried the motor by overheating it

I also noticed after sitting when I hit full throttle it steams out the passenger exhaust for about 5 seconds until we get on plane and then it goes away

Recently purchased a 1990 Supra comp with pcm 351 ford. Recently changed oil and impeller. Old impeller was missing rubber so I took apart thermostat housing to check for pieces. I found nothing....

Thank you very much for your help! I’m really going to be bummed if I damaged the engine running it with loose belts, but I’m going to continue with maintenance and hope for the best. I didn’t notice...

I recently purchased a 1990 Supra comp. it has a pcm ford motor but not sure if it’s a 305 or 351. Took it out and it ran fantastic except the temp gauge was bouncing all over the place and the alarm...