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bolson

07-12-2009 10:32 AM

496 HO won't do more than edle and miss

Looking for answer to help me get my 353 running.
I have 496 HO and it will not do anything but idle and it missis on more then one cyclinder?
Compression is at 150 on all 8 and plugs and fuel is ok. No codes show up on merc code reader all ok,fuel pressure,water pressure. What can a backyard guy do next.

selpel

07-13-2009 09:44 PM

Quote:

Originally Posted by jwheels629 (Post 2909397)

try distributor caps and rotors, the factory ones are white metal not copper, might just work !!!

On a 496??????????? Crank triggered no distributor!:cool-smiley-011:

Audiofn

07-13-2009 10:07 PM

Change your fuel filter. Are you sure the fuel is good? Maybe hook up a small pony tank to test.

Knot 4 Me

07-16-2009 10:34 AM

Are you just checking fuel pressure at idle or are you checking it as you are attempting to come on plane under a load? You could have a bad booster pump. Also, some 496's had a in-line automotive type fuel filter between the tank and booster pump. These are notorious for clogging. What year 496?

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