Pentax, wont shut off cleanly

B

boomerlazo

Recruit
Joined
May 24, 2009
Messages
1
when i shut if my volve pentax off. it shakes and rumbles as it tries to shut off. it will do that for about 20 sec. before it shuts off completely.
is this serious, i really want to go to the lake tommorrow.
other than that i don't have any other problems.

any help would be greatly appreciated
2000 19ft larson
 
Phantom_II

Phantom_II

Petty Officer 2nd Class
Joined
May 24, 2008
Messages
157
Re: Pentax, wont shut off cleanly

Heh... Pentax? I prefer Canon, but to each their own.

Your engine is having detonation problems.

A result of hot spots on your pistons.
This can have a lot of causes, but the most common are running rich, running hot or timing advanced too far.

Try a thorough tune-up.
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Pentax, wont shut off cleanly

It's Volvo Penta, not Pentax.

First off, what engine do you have?
Most common cause is idle rpm too high. Second by not allowing it to idle for a minute or two before shutting off.
 
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