Miss fire and cutting out

Bandycoot · 29-10-16, 07:56 PM

The other day I changed my cam cover gasket. Not a huge job but now there is a very irregular miss fire and it will cut out for a split second. It is worse when the cafe is up to temperature. I've checked the timing and that is spot on. The plugs and ht leads are just a few weeks old and fine. I've checked all the connections of all the bits I had to disconnect and all seams OK. The throttle body is clean. My thoughts vould be leaning towards a fuel problem. Any thoughts from you guys?

Bandycoot · 29-10-16, 07:57 PM

It's a 90q 7A engine by the way.

Colin Aitchison · 29-10-16, 09:07 PM

This would be a stab in the dark of night, just give us a clue may be model and cc and if you can engine number.

mikes2 · 29-10-16, 09:29 PM

if it's an ignition cut, check the inlet manifold grounds and that the MAF connector is fully plugged in

Bandycoot · 30-10-16, 04:02 PM

Sorted. I was the manifold earth connections. I had somehow only connected one and the other as making an intermittent contact on the manifold. Hence the missfire.

sinbin5t · 30-10-16, 09:44 PM

My kind of trick

29-10-16, 09:29 PM	#4
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	if it's an ignition cut, check the inlet manifold grounds and that the MAF connector is fully plugged in __________________ 1991 90 quattro 20v sport 1991 90 quattro

29-10-16, 07:57 PM	#2
Bandycoot Grown up member Join Date: May 2015 Posts: 24	It's a 90q 7A engine by the way.

29-10-16, 09:07 PM	#3
Colin Aitchison Senior Member Classic Audi Club Member Join Date: Dec 2013 Location: Back home in Tillicoultry Posts: 1,315	This would be a stab in the dark of night, just give us a clue may be model and cc and if you can engine number.

30-10-16, 04:02 PM	#5
Bandycoot Grown up member Join Date: May 2015 Posts: 24	Sorted. I was the manifold earth connections. I had somehow only connected one and the other as making an intermittent contact on the manifold. Hence the missfire.

30-10-16, 09:44 PM	#6
sinbin5t 4 ring whore! Classic Audi Club Member Join Date: Jan 2010 Location: Where a spike points skywards Posts: 12,960	My kind of trick