4.3 V6 190HP RUNS BUT POPS-DIAGNOSIS WANTED

[papaki63]

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]

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]

Re: 4.3 V6 190HP RUNS BUT POPS-DIAGNOSIS WANTED

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

 

[denniz]

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