Losing me rag

**Davidos12** · 1-15-08, 16:48

Hi,

Just had the belt and tensioner done today and my engine now sounds lovely and quiet. But now something else has raised its ugly head. Car is intermittently missing when idle and also when on the move. Could this be the timming?? If so its going back.

arrrghhhhhhhhh

Dave

**Einstein** · 1-15-08, 17:03

probably ignition based...

Try to pull any fault codes as it will help... things to check are plugs. leads, dizzy cap, dizzy etc

John

**Davidos12** · 1-21-08, 10:17

Still getting the misfire but not as bad as before so pulled the codes and got

10 Intake air temp sensor
11?
13?
14 Baro pressure sensor
17 Feedback System (LH 02 Sensor)

Cleared stored codes and went for a long drive now led shows constant on or nothing at all when put on the other way, is this right? If so I guess it means no codes stored. I'll try again later.

Any ideas

Dave

**Postal Dude** · 1-21-08, 12:20

Try shoving a bottle of injector cleaner in the tank. Partially blocked injectors can cause a misfire.

Gerry

**Davidos12** · 1-21-08, 13:07

I'll do as I'm advised this time I think Gerry, I'll do that first before anything else. Don't know if this is any help but the missfire only happens after running the car for a while and not from cold. Anyway injector cleaner tomorrow. Is that red X or is it different stuff i need?

Dave

**Einstein** · 1-21-08, 13:32

Redex injector cleaner will do fine..

Have you checked the connector on the MAF? give the terminals a good clean..

John

**Postal Dude** · 1-21-08, 14:14

If it's missing it is because all three things required for the engine to run correctly are not there. An engine is a very simple beast requiring air, fuel and ignition to run. So we know we have air so we need to look to fuel or ignition. An injector should give a fine atomised cone of fuel from it's tip. If partially blocked the spray will be deformed and it will dribble blobs of petrol from it's tip. This uneven spray pattern can cause a misfire. The other likely culprit is the high tension side of your ignition circuit (the one that makes your pubes go straight if you touch it) So if in doubt also replace the rotor arm, cap, plugs and leads. Oil in the rocker won't effect the ignition leads.

Gerry

**Davidos12** · 1-21-08, 15:13

Quote:

Originally Posted by Einstein

Redex injector cleaner will do fine..

Have you checked the connector on the MAF? give the terminals a good clean..

John

Please enlighten me on the maf? I know what and where the vaf is but not the maf.

Thanks

Dave

**Einstein** · 1-21-08, 16:33

Vaf sorry...

does the same job, just a different method..

**Davidos12** · 1-21-08, 17:48

Cheers John I'll check that also.

Starting to get into this tinkering lark.

Dave

**Davidos12** · 1-25-08, 2:50

Think I've found the problem but no idea what's causing it.

Redex hasn't worked so thought I'd check plugs, Pulled the leads of the front bank and number 1 has oil in it and it was dripping from the end of the lead. Got quite a bit out using a broken tape messure with some rag taped to it.

Anyone have any experience of this and how the oil will be getting in?

Thanks

Dave

**MX6 addict** · 1-25-08, 3:52

Common fault with MX6, cam or rocker (same thing) cover gasket not sealing, not sure if it would cause your missfire.
Replaceing the seal is straight forward but a bit time consuming. Front bank is the easyiest, disconnect everything (plugs etc) remove cover, replace gasket and put it all back together again. However the rear is a bit more complicated, you have to remove the inlet manifold.
I think I would make sure that this was causing the problem first, that is unless you want to change the gaskets! it give you the oppertunity to clean or paint the cam covers (see oddballs MX6 photos, that is if he still has them!)

Mark

**Davidos12** · 1-25-08, 7:47

As only no1 tube on the front bank has oil in it I may aswell change it, also may illiminate the burning oil smell. The valve on top of the front bank also leaks oil onto the rocker cover so I need to change that also. The misfire is so intermittent that I'm hoping this has something to do with it. If not I'll change the plugs next then dizzy cap and rotor arm then finally the leads, Cheapest to most expensive seems like a good order to do it in.

Dave.

**Oddball** · 1-26-08, 5:01

If the PCV on the front cover is leaking oil, then it is not sealed and this will cause a lumpy idle. Check the condition of the sleeve/collar that the PCV sits in on the rocker cover and shake the PCV and see if it rattles .. it should .. if not, try a little parrafin or similar to clean it out. The PCV should sit snug and tight in the collar. If need be, you can get a new PCV and collar from fordprobestore ...

Paul.

**Davidos12** · 1-28-08, 13:07

Ordered a new collar for now as the valve does fit snug but i think it may be leaking from the outer side if the collar. Only time will tell, new cam cover seals also ordered.