351 PCM help

Hi, I have a 1986 Nautique with the 351 in it. It has been running really bad. When I start it, it misfires like crazy and when I give it throttle the rpms dont want to go up at all. I just rebuilt carb and replaced all the ignition parts. Still running bad. I don't know what else to try, so any advice is appreciated!

start with the basics.
Suck
squeeze
bang
blow
Compression test to keep you from throwing money and time into a blowed up motor.
Then spark, cause its easy.
Then fuel.

There are some really savy Ford guys on here that will steer you down the right path.
All I can tell you is do the basic lifting first. Double check timing, dwell, and firing order. Make sure the coil is behaving, look for vacuum leaks and make sure the carb is fueling down all four holes but not flooding.
After that, You will need more help than I can offer.
Someone will be along soon..

Nothing wrong with a breaker points ignition if its set up correctly.
Ill defer to the Ford guys for a conversion option. You could try a search, sometimes it works. There have been many discussions about that option.

So what is the timing for these engines, because I have heard a lot of different things on what it should be

backfoot100 wrote:      I just had a brand new condenser in JBears boat that was bad. Can't blame it on the Chinese crap either. Made in the good old U. S. of A. It does happen.

I have heard this before Eddie that the quality just isn't there anymore,after all there isn't much of a market for them

When you rebuilt the carb did you change the water / fuel seperator ?

A freind rebuilt a carb and trashed it in no time from the crap in the line.

SS351- An easily forgotten part of the ignition system is the ignition switch. My 89 2001, with the 351 would either run great or just not start. It would always crank the engine nicely, but sometimes it would not fire at all. Once it just shut off while cruising down the middle of the river. I could measure voltage at the coil +, and see pulsations on the negative side, with a light. Current was getting through the corroded "On" position of the ignition switch, just not enough to fire the coil.

I threw lots of parts at my problem; from coils to electronic conversions to a complete distributor. None was a permanent fix, until I put a jumper wire from the 'Hot' side of the starter solenoid (on the back of the engine)to the coil resistor. The engine would now start, and more importantly, stop when the jumper was removed. It is an easy and cheap test to rule out the ignition switch.

i just purchased an 89 supra conbrio that holds a 351 windsor pcm - I too am having issues with starting. Cranks over and sounds like its ready to start but doesnt fire.   I'm wanting to order parts for the tune up but am unsure of which ones to get.   

Heres the info off my engine...can someone direct me to more info that can guide me to ordering the correct dist cap and other stuff for it?   
I think im lookin at the right parts from iboat but dont want to start ordering tons of crap i dont need or cant use.   

PLD-PR-R12/PP
9Y45001+10
firing order: 13726548

any and all info for my boat is appreciated.   
http://www.iboats.com/Pleasurecraft-Distributor-Caps/dm/cart_id.567048335--session_id.555590201--view_id.269085


how do i find the correct model number...they have...
PLEASURECRAFT RA108002
PLEASURECRAFT R108001



Replaces GLM #:71570
Replaces Original Equipment Manufacturer(OEM):Merc / OMC / Volvo / PCM / Crusader
Replaces GLM #:71590
Replaces Original Equipment Manufacturer(OEM):Merc / OMC / Plesaurecraft / Crusader

i know my application is 8 cyl screw down.   but....ya...not sure which one to get =[