spadey

Hi there I have a fiesta rs turbo EFI engine in my cossie replica and its smoking like a bitch!!!! Im pretty sure its the valve stem seals that need replacing and someone has said I dont need to remove the head to replace them I just need a tool which costs about £30 to do it with the head still on"" Basically can anyone give me any info as to where I can buy the tool and also how to do the job with the head still on the car? Any assistance is greatly appreciated as always.........

BRAMMER

iTrader: (23)

burton power sell the tool and yes you can change them with the head on.

spadey

Cool, but how? Sorry to sound stupid just wanna get a good idea as to how to do it? Cheers

RST Ski

beacuse the cvh spring compressor tool compresses the valve spring from above rather than a normal spring compressor grips the underside of the head, what ever stem seal ur working on, u need to make sure each piston is at tdc or near the top otherwise once the valve is released it will drop down inside the head, then ur head up taking to head off

SafeChav

Spin the engine over to its TDC timing mark, then you can do numbers 1 & 4, then you need to spin the bottom end over 180 degrees, and do numbers 2 & 3

Brookesy

Better still if you have access to a compressor you can get an airline that screws into the sparkplug hole and fills the combustion chamber with enough air for you to carry out your stem seal replacement

SafeChav

You still have to find TDC etc as i said though

daveselwood

i got mine from unipart, youll also need a magnetic screw driver to get the collets from the top of the valves

phill295

as above

daveselwood

ive done it loads of times with the tool,but i dont see what the air in combustion chambers does

SafeChav

Stops any possibility of the valves dropping down into the cylinder (but its physically impossible on a standard RST lump as ive tried to lose a valve and couldn't )

daveselwood

never thought of that one,i have more of a problem trying not to drop the valve collets so i got a good magnetic screwdriver

SafeChav

put a rag around the spring you are working on.......the ones at the back are the biggest pain in the arse when one drops down the oil return

Oranoco

Take all four plugs out of the engine as well as it makes it a lot easier to turn the engine over by hand. Put a rag round the valve you are working on to prevent the collet dissappearing down an oil way.

Tool is about £10 from and decent MotorFactors. Think mine is a Sykes Picovant and cost me £7 three years ago. Draper one is a bit pants and bent halfway through doing the job