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knocking noise

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knocking noise

Postby silvey87 » Mon Feb 01, 2010 8:08 pm

Hi all got a mk7 transit 115 rwd its making a kocking noise and is idleing very rough untill its reved uo put the fault code reader on it said cylinder 4 balence injecter restricted so i thought i would unplug all the injecters 1 by 1 and see if it was no4 injecter faulty but all did the same thing when unplug just ran on 3 has anyone had the same problem im pretty sure its not a knock coming from the engine as in top end or bottom end because it stops when reving and idleing somtimes any ideas.
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Re: knocking noise

Postby frog_southampton » Mon Feb 01, 2010 10:48 pm

I think i have a similar noise....

I had the wish bone replaced which resolved one of the knocking noises!

but now i have noticed a knocking noise even when sat at traffic lights etc when van not moving

let me know if you find anything more out?
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Re: knocking noise

Postby silvey87 » Tue Feb 02, 2010 8:04 pm

i have fitted a set of injecters today will try and start tommrow and see if that cures it.
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Re: knocking noise

Postby mobilevanman » Tue Feb 02, 2010 10:17 pm

u havent said wot mileage urs is at but it may b worth checking to c if ur clutch or more important flywheel isnt breaking up as that with cause uneven feeling and noises as decribed


tony
why not if u dont someone will
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Re: knocking noise

Postby frog_southampton » Tue Feb 02, 2010 10:31 pm

My van is Y reg, 2001 and has done 125k
The clutch and fly wheel was replaced a couple of thousand miles ago...

its weird though how i herd this slight knocking noise while the van was stationary at traffic lights.
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Re: knocking noise

Postby linus » Wed Feb 03, 2010 9:39 am

slight knocking noise while the van was stationary


You dont mean the fuel-tank-slosh :?:
viewtopic.php?f=5&t=37180

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Re: knocking noise

Postby frog_southampton » Thu Feb 04, 2010 12:19 am

Hmmmmmmmmmmmmm!

Not sure, i will have to have a listen tomorrow, i did a few times think there was a knocking coming from passenger foot well and then a few times a knocking coming from rear somewhere...

cheers!
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Re: knocking noise

Postby silvey87 » Thu Feb 04, 2010 8:27 pm

the milliage on the van is 98000 i have fitted a spare set of injecters and for a moment it sounded sweet as a nut the started idling bad again i will check the crankshaft sensor tommrow for metal.
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Re: knocking noise

Postby DEAN MACHINE » Thu Feb 04, 2010 9:04 pm

silvey87 wrote:Hi all got a mk7 transit 115 rwd its making a kocking noise and is idleing very rough untill its reved uo put the fault code reader on it said cylinder 4 balence injecter restricted so i thought i would unplug all the injecters 1 by 1 and see if it was no4 injecter faulty but all did the same thing when unplug just ran on 3 has anyone had the same problem im pretty sure its not a knock coming from the engine as in top end or bottom end because it stops when reving and idleing somtimes any ideas.

are you sure it coming from the engine ? , when i had my first mk6 i had a little knock at idle speed, first i thought it was flywheel ,had that replaced ,knock still there , i took it to various mechanics who came up with different things ,engine mountain , cat converter, changed both of them and it still knocked , , got the van on ramps and when you pushed the engine up with your hands the knock stopped , it turned out to be a metal pipe (think steering pump) knocking against the chassis rail , wedged a little piece of rubber down and knock gone , but it did sound like it was coming from the engine , im not saying thats what yours is but dont overlook simple things , i did and £600 later it was a 20p piece of rubber that did the trick :oops: :oops:
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Re: knocking noise

Postby silvey87 » Thu Feb 04, 2010 10:57 pm

hi i forgot to say when i fitted the injecters its not knocking anymore how ever it idles bad the engine is shaking all over the place would that be down to the injecters not being programed?
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Re: knocking noise

Postby frog_southampton » Fri Feb 05, 2010 10:29 pm

update on my knocking noise.....

After reading through the posts on here and listening to the noise I have found that it sounds like the fuel sloshing about in the tank!!

Never herd it before, bit weird..i have half a tank in there ATM.

Is this normal or is there a fix?

thanks!
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Re: knocking noise

Postby angeleye » Fri Feb 05, 2010 11:39 pm

only tdci injectors need coding
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Re: knocking noise

Postby silvey87 » Thu Feb 11, 2010 8:47 pm

hi all it turns out i need to book the van to the dealers to have a pcm calibration update do you now if this will cure the fault or is it just a waste of time. cheers :D
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