Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Webby the Bear]

Hi guys,

Please help I am real worried I've nackered my Mig

Basically changed all spark plugs today. Drivers side was easy, nothing having to be removed to get access. On passenger side I started with the awkward one at the back. To get to it I had to take off the brake servo lead (gold nut and lead directly above spark plug at the back) and also remove the ICV.

I finally got the plug out and new one in but then stupidly started the engine with the ICV out and brake servo cable off. it started and then went bang! so i finished the job, did everything back up and started it. no probs at all...

except, i was just checking everything and WHILST IT WAS OFF went bang again. i was like ''what the fek was that'.

took it for a spin. its running fine and idel is set at 600 rpm (although it wouldn't start first time)

but then coming back home it banged again. (3 in total)

the last time as i was driving i noticed it felt like it was under the car.

please say ive not fekked my precious miggy 

[Darth Loo-knee]

Starting the car without the brake servo pipe attached to the plenum will not be the first person or last Steve.... I had a flame come out of the plenum once    just put it back on and tighten it up.
ICV not plugged in when started will more than likely put a code on the ECU....nothing to worry about though

Should not keep banging though so double check you haven't left anything else off 

[albitz]

And check you dont have any tools missing from your tool kit.
Can you be any more descriptive regarding the bang Steve. ? Sounds a bit of a strange one tbh.
Bang like a backfire/ gunshot type noise.Bang like something falling off....... ??

[Darth Loo-knee]

And check you dont have any tools missing from your tool kit.
Can you be any more descriptive regarding the bang Steve. ? Sounds a bit of a strange one tbh.

It will bang with the servo pipe not attached to the plenum...

Check that you have put the icv back in properly, maybe the rubber is not in the plenum properly 

[albitz]

Still banging after he put the servo pipe back on though.

[Webby the Bear]

Starting the car without the brake servo pipe attached to the plenum will not be the first person or last Steve.... I had a flame come out of the plenum once    just put it back on and tighten it up.
ICV not plugged in when started will more than likely put a code on the ECU....nothing to worry about though

Should not keep banging though so double check you haven't left anything else off 

Thanks so much Daz. Fek, I've now got to go and clear this load out my trunks 

Everything's back. I checked, double checked, then triple checked as I'm paranoid. 

Only things to note is that I couldn't get the bottom screw back in to the bracket that holds the ICV. The thing is jammed in there now but is still holding the thing in place. And besides I got a cable tie holding it in place.

Also, when i was moving various pipes out the way, I accidentally broke off a clip that was holding a pipe to another pipe (was very brittle and old)

What on Earth could this bloody bangin be... with the engine OFF!!

I thought I was going mad but my dear ol' mum was in the car the last time. She too was like ''what the fkcu''!

[Webby the Bear]

Thanks Albs.... yes it's like some bugger was underneath and give the bottom of the car a smack with a hammer!

What on Earth have I done 

I got to go to see my Grandma tonight at her home. Should I really not be driving it til i've double checked this in the light?

[RobG]

Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from

[Webby the Bear]

Let it idle with bonnet up, you may be able to pinpoint what area the "bang" is eminating from

That's the thing, Rob. When it went bang second time car was off and I literally had my head in the engine trying to do that screw up. I thought it came from the back like something had dropped off!

[Darth Loo-knee]

If you have removed nothing more than the ICV and Brake Servo Pipe, it must be one or the other.
Is the rubber in which the ICV sits, sitting properly into the plenum?

Is it still doing it? Like Rob says run it at idle and see.

[Webby the Bear]

If you have removed nothing more than the ICV and Brake Servo Pipe, it must be one or the other.
Is the rubber in which the ICV sits, sitting properly into the plenum?

Is it still doing it? Like Rob says run it at idle and see.

Yes mate, have done. and i've took it for a 20-30 minute run. as said running nice and bit more power but just these bangs.

oh i did remove the cable tray screws (two on top of plenum) so i could try and push this out the way as much as possible.

I think it's best I track back, take the cable tray off and try and get that screw back in cos thats the only odd thing. but it is sitting in the plenum correctly!

[Webby the Bear]

If you have removed nothing more than the ICV and Brake Servo Pipe, it must be one or the other.
Is the rubber in which the ICV sits, sitting properly into the plenum?

Is it still doing it? Like Rob says run it at idle and see.

Yes mate, have done. and i've took it for a 20-30 minute run. as said running nice and bit more power but just these bangs.

oh i did remove the cable tray screws (two on top of plenum) so i could try and push this out the way as much as possible.

I think it's best I track back, take the cable tray off and try and get that screw back in cos thats the only odd thing. but it is sitting in the plenum correctly!

...but having said that i was working on that screw when the bang went when it was stationery 

[Elite Pete]

Make sure that plug lead no 6 is on the plug and dis pack properly. Its a short lead and when you pull it off the plug sometimes it moves on the dis pack as well

[Darth Loo-knee]

Steve for goodness sake you seem to be getting in a pickle, chill for a bit have a cuppa. Then go with a torch and check properly what you have done. If you car was not making this banging before you started, but it is now... It is more than likely something you have done...

We can only go from what you are telling us.. So if you have removed the servo pipe from the plenum, plus removed the ICV, plus the screw you keep mentioning... Which I can only assume is the screw which holds the ICV rubber in place.... I would say you have got something wrong somewhere.
Check you have put the Brake servo pipe on properly.
Check you have the ICV fitted properly.
Check that the rubber that goes into the plenum is in properly,  as this could be something to do with "the screw".

You have put the leads back onto the plugs properly?

[Webby the Bear]

Make sure that plug lead no 6 is on the plug and dis pack properly. Its a short lead and when you pull it off the plug sometimes it moves on the dis pack as well

cheers pete. sorry is number 6 the awkward rear passenger one i take it?

thing is wouldnt the car running be crap? car is perfect and bit more power.... just this banging!!!!!