Club G40 Forum

Technical => Engine and Transmission => Topic started by: DKnight on November 23, 2009, 03:52:16 PM

Title: hmm, i have funny noise...
Post by: DKnight on November 23, 2009, 03:52:16 PM
Well took car out today, and noticed a clicking noise?

hard to explain, but it sounds like an injector click, you can hear it mostly at higher revs.

But stationary, if you rev it, i cant hear it?

but take car out, you can hear it, first thought was pinking but i know it isnt, it does it even at light acceleration

its too repetitive and consistent

no change in power, it runs fine exactly same

im 99% sure it is an injector, got some spares to test

checked all leads as it defo sounds electrical, but it runs fine no problems

hmmmmmmm
Title: Re: hmm, i have funny noise...
Post by: PeteG40 on November 23, 2009, 04:00:05 PM
stuck tappet?
Title: Re: hmm, i have funny noise...
Post by: DKnight on November 23, 2009, 04:56:09 PM
yeah the speed does change with higher revs

oil change, it is due one i reckon

will give it a go
Title: Re: hmm, i have funny noise...
Post by: hayesey on November 23, 2009, 05:07:52 PM
prob worth taking the tappets out and giving them a good clean in some carb cleaner I reckon.
Title: Re: hmm, i have funny noise...
Post by: grayg40 on November 23, 2009, 07:55:12 PM
before taking off rocker cover, take a screwdriver, hold the handle to to your ear and place other end on the rocker over one cylinder working along till you find which cylinder is giving you the problem. the ticking will be amplified if its under the rocker.
Title: Re: hmm, i have funny noise...
Post by: DKnight on November 24, 2009, 12:31:07 AM
yes good idea, will check 2mrw
Title: Re: hmm, i have funny noise...
Post by: DKnight on November 24, 2009, 01:27:33 PM
well i took rocker off, cleaned everything up, and it is still there

it is coming from the dizzy area, i have swapped the dizzy, still same

so last test will be the injector

if it isnt that then im gunna cry a little
Title: Re: hmm, i have funny noise...
Post by: PeteG40 on November 24, 2009, 01:39:55 PM
cleaned everything up?!? you do know to take the tappets out and clean them you need the cam out?
Title: Re: hmm, i have funny noise...
Post by: DKnight on November 24, 2009, 01:41:05 PM
ya-know.

thats what i just spent the last hour and a bit doing
Title: Re: hmm, i have funny noise...
Post by: PeteG40 on November 24, 2009, 01:43:36 PM
properly do it is to take the tappets apart and soak them in paraffin.  Put them back together and leave them to soak in oil overnight - or get new ones.

Title: Re: hmm, i have funny noise...
Post by: DKnight on November 24, 2009, 02:27:58 PM
yeah well im adamant that is not the problem, its a too defined click, ive swapped the injectors, no change, it is coming form the dizzy area, no ideas now what to check
Title: Re: hmm, i have funny noise...
Post by: hayesey on November 24, 2009, 04:05:16 PM
Quoteyeah well im adamant that is not the problem

I've heard that one before ;)

I've got some spare (not new) tappets you could try swapping in to see if it makes a difference.
Title: Re: hmm, i have funny noise...
Post by: DKnight on November 24, 2009, 04:17:38 PM
well i took it to my garage man and he thinks it is the exhaust blowing, on one of the ports, and i kind of think he is right, as their are no changes in performance at all

so will check that at some point!
Title: Re: hmm, i have funny noise...
Post by: PeteG40 on November 24, 2009, 04:18:44 PM
can you not feel it or hold a bit of paper and see if waft...
Title: Re: hmm, i have funny noise...
Post by: hayesey on November 24, 2009, 04:44:50 PM
ah I see, yeah that can make a ticking noise, you can usually see carbon deposits around the area it's leaking from (of course, it could be underneath where you can't see easily though).
Title: Re: hmm, i have funny noise...
Post by: DKnight on November 24, 2009, 06:25:23 PM
yeah it is nowhere on the top and side, cant see or feel anything, im guessing it is underneath, i will examine at the weekend, now im not on code red and allowed to drive it
Title: Re: hmm, i have funny noise...
Post by: NeilG40 on November 25, 2009, 07:02:39 AM
I'd completely forgotten until you mentioned the exhaust, but when my manifold gasket started leaking it made a sound like noisy tappets at higher revs.