Red top nova going of cylinder

[Declan77]

Wonder if any 1 could help my nova has started to go of a cylinder i'v changed air flow meter, cts, plugs, leads, have not changed coil or coil lead yet just wonderin if any 1 could help thanks.

[swedge]

you mean its only runnin on 3?

i know you have changed the leads and plugs but have you checked if your getting a spark from all 4 leads?

if you dont get a spark on 1 lead swap it with another and you can figure out wether its the lead or plug or coil

what engine btw

[Declan77]

they r all sparking but weaker on firsr cylinder when i pull of leads when running engine nearly dies and when i pull of first 1 it make no difference to engine, its a 91 gte astra engine

[General Baxter]

number 1 is dead then its simple

[Sloth]

check the dizzy cap, then do a compression test. £5 says head gasket.

[Declan77]

put a new cap on still the same it came ok the other nite for about 10 mile then bad again.

[Andy]

do a compression test fella

[Declan77]

must try that wat else would it be if that was ok

[Sloth]

possibly coil breaking down, but its rare. ecu also, but comp test it first.

[Declan77]

ok ill get a look at it start of week and let yous no

[Declan77]

done a compression test its ok any ideas what to do now.

[Stuart]

stop text typing is the first port of call.

What were the compression test results (wet and dry)

[Declan77]

not sure another boy done it i put on a new coil and coil lead today still going the same