01dwilkinson

Hello, i have just fitted a new standard ford cam, hydrolic lifters ,rocker arms and valve stem oil seals. to my s2 and am having trouble getting the car to idle smoothly, when i start the car some times i have to push down the metering flap down to get it to start, it sounds fine when the revs are held at about 2 thousand revs but you have to slowly let go of the metering flap slowly then it will idle but just quite roughly. Also i have started the car like this about 6 times but havent bedded in the cam yet as i wanted to sort the idleing problem first, will it have done my cam any harm and what is the best way to bed it in.
I cant find any airleaks or anything and have put new boost hoses on it but stil sounds like it running on 3 cylinders. really anoying now.
Any ideas

Christian and Beccy

iTrader: (14)

You sure the cambelt is on right?

01dwilkinson

Yes the Timing is spot on, when the timing marks line up the rotor arm is pointing to 2 oclock. I put number 1 spark plug lead on starting from the rotor arm and put the others on going anti clockwise, 1342 so the plugs are on correct. Any more ideas.

Canada1

Check all if your ignition system make sure firing order is correct, and verify the 4 injectors are all functioning. ( not running)

I would definitely forget about the idle problems, as you will surely damage the camshaft and lifters by not following the correct camshaft break in procedure.
Idling with new cam and lifters before propper bedding will lead to failure.

01dwilkinson

Right, With the car not running i bridged a wire across the fuel pump relay and pushed down on the metering flap and fuel is coming through each injector ,i also bought a new fuel pump relay so its getting fuel ok.
I double checked my leads and there on in the correct order. 1342.
How should you bed in a new cam.

01dwilkinson

Anybody

JamboRS

car should be revvin at 2-2500k rpm for 20 mins approx to run in a new cam
letting it idle is takin life of ur cam and will lead to premature failure

01dwilkinson

cheers pal, the car seems to sound fine when the revs are at 2000 onwards so i should be able to bed the cam in. just wont idle properly, stil have push the metering flap down a little.

JamboRS

just get that cam bedded in then concentrate on ur prob mate,idling issue is minor detail compared to needin to do another cam/tappets