The V8 Owners Forum -

HELP can anybody shed some some light on a problem with my 3500 earley SD1 engine. when pulling away at about 15 =20 mph there is a knocking from the front of the engine if I close the throttle and then open it the knocking goes, I can do 70-80all day with no noise , it's only when pulling away or going up a long hill, but if I take my foot off the pedal and back on again the knocking stops? any help much appreciated.

crank pulley bolt loose?
can you rock the pulley back and forth on the crank a bit?

Damper can part at the rubber joint?

Hi no the crank shaft pully is tight . no movement.

the noise sounds like a small end knock? but I was told if it was a small end it would knock all the time? and that it could be the timing chain?

Is the car an Auto or manual gearbox?

Hi Devonman it's an auto but the knocking seems to coming from the nearside front. as it's a trike I am sitting directly behind the engine

Maybe the vac advance is a bit sticky?

Chris.

not as bad as my one was I hope:

http://www.youtube.com/watch?v=aVlsmipLxyQ

Could it be pinking/knock. Too much ignition advance maybe?

It could be I did all the timing but I have taken the timing cover off and the chain has at least an inch of slack would that cause the timing to fluxuate when pulling away. when standing still it rev's up with no knocking and sounds sweet.

I think there's a possibility that you've just answered your own question.....

How did you get on with this fault because I have the very same with my engine. Would be interested to know what you found.

someone told me to disconnect the tube from carb to dizzy and it seems ok now? although it was timed on a snapon timeing light the timeing was way out.

Have you done the timing now and reconnected the pipe or are you leaving it off?