4 replies to this topic

[Hectorfleetsond]

Hi all, thought i had seen an answer to this some where but can't seem to find it now.

I have no combustion in cylinders one and two. I have spark at the plugs. If i remove 1 and 2 plugs it starts no problem just on 3 and 4 but if i remove 3 and 4 plugs it doesn't start at all with just 1 and 2. Any ideas to solve this, what could be causing it. Thanks in advance. It's a 1989 998 engine. 

Edited by Hectorfleetsond, Yesterday, 08:20 PM.

[68+86auto]

Have you checked the firing order?

[timmy850]

Have you done a compression test?

[sonscar]

Inlet manifold gasket or head gasket would be my thoughts.Steve..

[gazza82]

When I had this on an online A-series found exhaust valves on 3 & 4 were burnt so hopefully not as bad as that!