my car sounds like a scooby

[TomTom]

ive just changed my turbo as the seals went in my old one, lots of smoke.
but since ive had the new one in it sounds like a boxer engine and wont idle properly.
can anyone help?

 

[TRD1mos]

you must lose exhaust fumes from manifold or downpipe.Check out your engine near manifold for black smoke,it sounds that a gasket is not sealed or is cracked.

 

[TomTom]

i havent noticed any smoke under the bonnet but il check it out cheers

 

[steveep82]

Could be an exhaust leak, could be a dropped piston/worn rings etc, but check what you have just replaced for leaks first.

 

[Iain@CRD]

Water ontop of your spark plugs?

 

[Sparky]

Compression test it would be the 1st thing I'd do, doesnt sound good, sounds like the dreaded ringland failure

 

[mitchracer]

I had this problem when I put my engine bk in, did you pull the hd leads out at any time? As mine was a stupid mistake and the firing order was wrong? Just an idea

 

[Gtjond]

Sounds like an exhaust Leak mate. Mine did the same. I just replaced all the gaskets and cleaned up the flanges to seal it properly.

 

[Pixie96]

Water ontop of your spark plugs?

x2 defo!!

 

[glanzanut]

Dropped a cylinder?

 

[TomTom]

ive done a compression air test and its leaking back into the crankcase doesnt look good.
time to take the head off and have a look.
will keep posted.

 

[TomTom]

Pistons gone.
the leading edge on one of my pistons has melted away and broken off between the rings
no damaged to bore though thankfully.
got all the parts i need now so time to crack on with it next week.

 

[Brad_L]

which piston?

 

[woff]

could it do this when cold but b fine when it warms up?? as mine sounds exactly the same

 

[glanzachris09]

What do you mean it sounds like a scoobie all the time like a misfire sound?

 

[TomTom]

piston 1.
yeah like a misfire just all up the rev range.
all sorted now