Pleasurecraft 351

James D. Evans

Seaman Apprentice
Joined
Jul 16, 2013
Messages
37
Bought a 1992 Supra with a PCM 351W and PCM1.23:1 tranny in it cheap. Runs rough. Think the Plug wires are on wrong...

What is the correct firing order for this animal? I am not sure what rotation the motor is.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,470
Bought a 1992 Supra with a PCM 351W and PCM1.23:1 tranny in it cheap. Runs rough. Think the Plug wires are on wrong...

What is the correct firing order for this animal? I am not sure what rotation the motor is.

Ayuh,..... Go roll it over on the starter, 'n Look to see which way it's turnin',......

It's rather Important to firin' order,....
 

James D. Evans

Seaman Apprentice
Joined
Jul 16, 2013
Messages
37
No Title

Found the tag on the motor, I was at work when I posted this!

1-3-7-2-6-5-4-8 is what is on the engine tag, however it will barely run in this configuration. It runs smooth as butter on the old 302 firing order of 1-5-4-2-6-3-7-8. It was wired 1-3-7 as the tag says, and the number 4 plug wire was unhooked laying in the bilge. Hooked it up and tried to run it on a bucket, but it would barely run. Tried the old 1-5-4 and she fired instantly and purred like a kitten. Either someone has replaced the original motor with a 302, or someone has put a 302 cam in it.

It has brand new wires on it, think the owner took them all off and tried to wire it to the engine tag and couldn't get it to run right. Thus up for sale it went. It ran decent with a plug wire off last weekend, just minor shake at idle...no pop, backfire, or anything like that. Had lots of power considering it was running on 7 holes. Think I might have got a steal on a sweet boat!
 

Attachments

  • photo224478.jpg
    photo224478.jpg
    96.5 KB · Views: 0
  • photo224479.jpg
    photo224479.jpg
    99.3 KB · Views: 0
Top