4.3 V6 190HP RUNS BUT POPS-DIAGNOSIS WANTED

papaki63

Recruit
Joined
Jul 13, 2003
Messages
1
AFTER LAST SERVICE OF A4.3 V6 190HP YEAR 1990 I/O MERCRUISER AND THE USE OF WRONG SPARK PLAGS (LONGER) THE ENGINE STARTED POPING FROM CARBIRATOR.<br />DAMAGE DIAGNOSIS WANTED.<br />REPAIR INSTRUCTIONS ALSO.
 

akriverrat

Chief Petty Officer
Joined
Oct 31, 2002
Messages
588
Re: 4.3 V6 190HP RUNS BUT POPS-DIAGNOSIS WANTED

compression check to rule out intake valve damage if popping through carb. lean mixture also a possibility.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,276
Re: 4.3 V6 190HP RUNS BUT POPS-DIAGNOSIS WANTED

Ditto.......<br />And Loose the CAP-LOCK.......
 

denniz

Senior Chief Petty Officer
Joined
Aug 21, 2002
Messages
743
Re: 4.3 V6 190HP RUNS BUT POPS-DIAGNOSIS WANTED

id check your firing order for a crossed spark plug wire. didnt pop before plugs? added plugs and now pops.... Darn sure worth checking
 
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