Noise???
Turbo Mini Forums

Right, I think that this is going to drive me crazy.

I have got a missfire, which I can't seem to get sorted. But I have also got another noise that I thought may have been detonation.
See this thread for the history
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=134671

I am now running the car with an intercooler, but I still have the noise. It only occurs when at low revs and lots of throttle. It's like a cracking noise.

I am booked in to see Ray at T&M next wednesday but I now fear that it's somthing else (the gearbox or the drop gears maybe?!?)

Sorry for bringing this back up, but I really need to get it sorted otherwise I am going to rip the whole lot out (burn it!!!) and start again!

In the 13's at last!.. Just

to be honest its very hard to say wht it is from a description, i think most things have been covered in your other thread. if the noise is this apparent it should only take a rolling road operator to suss out a problem area.

no longer a series, but still 1.3 turbo.

a cracking noise sounds like a spark jumping off a lead , try closing up the plug gaps to 25 thou as a quick test of this . the other thing you could try is richen the engine up a turn ,so its too rich ,then drive it and see if it makes a diff .
regards
robert

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

I have tried to richen it up and it makes no difference.

The noise sounds more mechanical than the noise that a spark would make.

In the 13's at last!.. Just

like a marble in a tin can?

no longer a series, but still 1.3 turbo.

Not really, Its more like a cracking from the bottom of the engine on the radiator side (passenger side).

In the 13's at last!.. Just

an inspired guess, broken timing chain tensioner maybe ? most probable!

what history have you got on the engine, is it a fresh build or an ebay special?

no longer a series, but still 1.3 turbo.

oh and does the noise happen witout driving the car i.e just by reving it up sat still?

no longer a series, but still 1.3 turbo.

Only does it when under load.

In the 13's at last!.. Just

Timing chain tensioner sounds probable. It's coming from that side.

Steve, I bet you are as fed up with this as I am. You have been on it from the start!

If I but a new duplex timing kit would it include the tensioner? or should I just buy it on it's own?

Could this also be the cause of the missfire?
If so, I had better stop driving it!

In the 13's at last!.. Just

id expect a faulty timing chain tensioner to be noisey all the time not just under load. duplex kit wouldnt include a tensioner i dont think as a lot of people dont use a tensioner with one. i think i do, cant remember tho lol

no longer a series, but still 1.3 turbo.

Timing chain tensioner sounds probable. It's coming from that side.

Steve, I bet you are as fed up with this as I am. You have been on it from the start!

If I but a new duplex timing kit would it include the tensioner? or should I just buy it on it's own?

Could this also be the cause of the missfire?
If so, I had better stop driving it!

In the 13's at last!.. Just

Whoops.. Don't know whay that happened there?

Easy for you to say Carl LOL!!


What else is on that side that could make this sort of sound?

In the 13's at last!.. Just

this is a hard one ....ish to fault find without been there ?

anway strip it first and have a look ?

not saying it is but........

minispares north do one for buttons with a new chain

ask for richard minispares north