Timing Issue - Need some help! |
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91NaughtyQ
Senior Member Joined: July-27-2015 Location: NC Status: Offline Points: 287 |
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Posted: August-08-2019 at 3:07pm |
Hey guys. In short the boat hasn't been idling as smooth as it should be (or used to be) I checked the timing and it is pretty far off. I tried adjusting it with my light, but I can't get it back in time before the engine just shuts off. What am I missing - Basically what are the steps I need to take. 91 Nautique - 351 PCM - PRO TEC (Retro Kit installed 3 years ago)
658 hours. I have looked through the various threads and can't seem to figure it out. Any help is greatly appreciated. Also could my timing light be jacked up? Is there a way to test that? Gary |
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1991 Ski Nautique
(Previous)1984 Ski Nautique 2001 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10753 |
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You must be trying for something around 10 degrees BTDC. at idle
What do you have for timing right now |
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91NaughtyQ
Senior Member Joined: July-27-2015 Location: NC Status: Offline Points: 287 |
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Right now the mark for 10 degrees BTDC is about 3 or 4 inches to the right of the post. Not even near the marks by my light. Should it be 10 BTDC at 600 RPM?
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1991 Ski Nautique
(Previous)1984 Ski Nautique 2001 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10753 |
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10 at 600 sounds good Are you on the #1 cylinder (the front right)? If you're on the front left you're making believe it's a Chevy |
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91NaughtyQ
Senior Member Joined: July-27-2015 Location: NC Status: Offline Points: 287 |
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If I am facing the motor (belts toward me) it is the front right #1 correct?
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1991 Ski Nautique
(Previous)1984 Ski Nautique 2001 |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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no front left then
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10753 |
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Just to be sure
A picture's worth a thousand words For your normal rotation engine |
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MrMcD
Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3610 |
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On V8 engines one cylinder head is always forward of the other.
Looking down at the engine from the front top determine which head is most forward. It will be about 1" forward of the other head. Your Number 1 cylinder is always in the forward bank/Head on any V8 engine. In the post above for the Ford, cylinders 1234 are 1" forward of the 5,6,7,8 cylinders in reality even though the pic shows them even. Knowing this will let you find number one even if you don't know if it is a Ford or Chevy! |
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91NaughtyQ
Senior Member Joined: July-27-2015 Location: NC Status: Offline Points: 287 |
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Let me test again. Not being on 1 is probably going to be an issue. |
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1991 Ski Nautique
(Previous)1984 Ski Nautique 2001 |
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91NaughtyQ
Senior Member Joined: July-27-2015 Location: NC Status: Offline Points: 287 |
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Damn you boys are smart. Dialed in 10 degrees BTDC purring like a kitten! Can't thank you guys enough!!
Gary |
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1991 Ski Nautique
(Previous)1984 Ski Nautique 2001 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10753 |
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So your timing light was just fine and the only thing jacked up was you
Hate it when that happens |
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91NaughtyQ
Senior Member Joined: July-27-2015 Location: NC Status: Offline Points: 287 |
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Guilty as charged sir! Thankful for you guys for sure. I told my wife (again) let me post to the forum I am sure it is something simple. They will get me straight. Gary |
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1991 Ski Nautique
(Previous)1984 Ski Nautique 2001 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 10753 |
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It's a good thing you've got a sense of humor
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