knocking/rattle

[fordy70]

i have a 1.9tdi 130bhp 02 passat, its got a miss on idle, and when reved to approx 2,000-2,500 rpm theres a rattle/knock on the top end can any1 help me on this, the car runs fine untill it hits the rpm any help from fellow members would be a great help to me its doin my head in

[martin1810]

A miss on idle is usually a faulty injector wiring loom. The rattle is more worrying. It could be a sign of cam/follower damage which might also cause the idle miss. Either way you need to get a code read and then look under the cam cover.

[fordy70]

whould that explain the popping sound that i can hear around the air-box/ plannum chamber? could you ring or text me on 07523199032 many thanks paul

[macquatic]

Definite camshaft/follower problem. A valve is not opening/closing correctly which will give you the popping noise.
Expensive job but can be done without the head off.

[thomj316]

I repaired a similar problem with my friends 1.9tdi octavia. After removing the cam cover i found that the camshaft had worn through the follower. I removed the cams, cleaned it up, and replaced all the followers along with the camshaft. All of this was done without removing the head, and was a failry straightforweard job.

He had the parts for it on ebay, and i think it cost less than £250 for the whole job.

Jamie......

[yaman]

If this has been caused by neglected oil changes and/or blocked oil-ways
and oil pick-up, then you should run an engine flush through the engine
now, rather than after doing the cam and followers. There's also a chance
that it might clean-out a blocked tappet.

Regards
Jim