Technical Head gasket blown, balancing options, little money

[koalar]

Carb cleaner
Meths
Isopropyl
Throttle cleaner


Spray with it pointing down, is safest

 

[Keepthe12alive]

Carb cleaner
Meths
Isopropyl
Throttle cleaner


Spray with it pointing down, is safest

Brake cleaner bad in this case?

 

[Keepthe12alive]

I’ll leave off soon — I’m really grateful and I know what I’ll work on first thing in the morning —

I’m seeing that potentially piston rings/oil being in the cylinder with the combustion could maybe explain why the MAP is covered in oil —

Is that a likely hypothesis for this car?

 

[koalar]

Common issue

Rarely serious,

Brake cleaner, fine

 

[A3jeroen]

You may have destroyed your cat. Oil in it may get the cat extra hot now, causing your fan to kick in. Frantic temp gauge sounds like thermostat or air.

gr J

 

[Keepthe12alive]

So I cleaned my MAP this morning and it seems to be running a bit worse

Really not a good idle

I had already scheduled to pick up new tires for 140, but I’m wondering if I should hold off on that until I get to the bottom of this

 

[koalar]

See if all cylinders are firing correctly

Unplug a HT lead of one at a time start the engine
Switch the engine off and plug it back, repeat for the other 3 cylinders

Do any of the leads make no difference

Here's mine it's a 2011 so it has one coil block under the air box, earlier cars have two coil on the right hand side but the principle is the same

Also at the end I run it on two cylinders so you can see what it sounds like

 

[koalar]

Also check the inlet manifold isn't leaking

Engine should stop immediately and hold a vacuum

Be awaiting it's quite a vacuum

 

[Keepthe12alive]

See if all cylinders are firing correctly

Unplug a HT lead of one at a time start the engine
Switch the engine off and plug it back, repeat for the other 3 cylinders

Do any of the leads make no difference

Here's mine it's a 2011 so it has one coil block under the air box, earlier cars have two coil on the right hand side but the principle is the same

Also at the end I run it on two cylinders so you can see what it sounds like
View attachment 452869

All the leads made about the same difference, might have thought the 4th cylinder had biggest impact but probably tricking myself

I also heard like a pressure release after I turned off the engine each time

 

[Keepthe12alive]

Also check the inlet manifold isn't leaking

Engine should stop immediately and hold a vacuum

Be awaiting it's quite a vacuum

View attachment 452870

Do you just turn it off by plugging that air hose with your thumb?

 

[Keepthe12alive]

See if all cylinders are firing correctly

Unplug a HT lead of one at a time start the engine
Switch the engine off and plug it back, repeat for the other 3 cylinders

Do any of the leads make no difference

Here's mine it's a 2011 so it has one coil block under the air box, earlier cars have two coil on the right hand side but the principle is the same

Also at the end I run it on two cylinders so you can see what it sounds like
View attachment 452869

This looks exactly like what just happened

Also, this is very kind of you to do all of this and the filming

 

[Keepthe12alive]

I don’t think it’s holding a vacuum

 

[koalar]

Just put your palm over the throttle body

It should stop the engine

It should be pretty violent and hard to remove your hand

 

[koalar]

All the leads made about the same difference, might have thought the 4th cylinder had biggest impact but probably tricking myself

I also heard like a pressure release after I turned off the engine each time

All the leads made the same difference

It's unlikely to be a head fault causing the idle issue

Is it rough idling or is the revs going up and down

 

[Keepthe12alive]

All the leads made the same difference

It's unlikely to be a head fault causing the idle issue

Is it rough idling or is the revs going up and down

Just rough idle — revs staying same

 

[Keepthe12alive]

Just put your palm over the throttle body

It should stop the engine

It should be pretty violent and hard to remove your hand

It is violent at first, but then it bleeds out

 

[koalar]

The idle sounds about right in the video

I can't see any engine vibration has it settled down

 

[Keepthe12alive]

The idle sounds about right in the video

I can't see any engine vibration has it settled down

Like you’re sakibg it should kinda shake when I put my palm over it?

 

[Keepthe12alive]

Also I had this noise earlier today that had be unsettled

 

[koalar]

So is the car driving well at this point in time

The noise is at the front

Does it sound worse from underneath

Is the MAP covered in oil again