Question: Maximum heat resistant spark plugs & spluttering
Posted: 15 Nov 2022, 17:45
Hi
1) Would anyone know the maximum spark plug heat resistance for a '71 1.3S Fulvia coupe?
2) Could I put NGK BCPR8E or, 9 spark plugs without damaging the engine?
My mechanic fitted NGK BCPR6E but engine splutters from 3-4 (plenty of power), Plugs are fouling (black even after a very short run) Compression is 130 psi on all 4 cylinders.
Contact points are new and the gap is set correctly. New condenser. I also changed the Marelli distributor cap and last week, replaced a worn inlet manifold gasket, so no air. New fuel pump
Yesterday, I removed the fouled plugs and fitted NGK BP6ES . I had spark at the contact points but no spark at the new leads.
I replaced the old NGK BCPR6E plugs and the engine fired up but still splutters.
3) Would replacing all 4 NGK BCPR6E plugs or, 8/9 resistance, cure this splutttering?
Based upon the above, could anyone advise as to:
The maximum plug resistance?
Spluttering (bouncing from 3-4 on a warm engine)
Would incorrect mixture cause spluttering?
Many thanks
1) Would anyone know the maximum spark plug heat resistance for a '71 1.3S Fulvia coupe?
2) Could I put NGK BCPR8E or, 9 spark plugs without damaging the engine?
My mechanic fitted NGK BCPR6E but engine splutters from 3-4 (plenty of power), Plugs are fouling (black even after a very short run) Compression is 130 psi on all 4 cylinders.
Contact points are new and the gap is set correctly. New condenser. I also changed the Marelli distributor cap and last week, replaced a worn inlet manifold gasket, so no air. New fuel pump
Yesterday, I removed the fouled plugs and fitted NGK BP6ES . I had spark at the contact points but no spark at the new leads.
I replaced the old NGK BCPR6E plugs and the engine fired up but still splutters.
3) Would replacing all 4 NGK BCPR6E plugs or, 8/9 resistance, cure this splutttering?
Based upon the above, could anyone advise as to:
The maximum plug resistance?
Spluttering (bouncing from 3-4 on a warm engine)
Would incorrect mixture cause spluttering?
Many thanks