| View previous topic :: View next topic |
| Author |
Message |
CuGem
backyard mechanic
Joined: 07 Oct 2001
Posts: 599
|
 Posted: Sun Jul 07, 2002 10:48 pm Post subject: exhaust popping |
 |
|
This evening I noticed a bit of exhaust popping at idle and I'm wondering what might have suddenly caused this to begin? ( I don't believe it is a result of a lean mixture). everything is new 5000km ago. Could be the points and plugs? what else?
Cheers |
|
| Back to top |
|
 |
joeblow
rice boy
Joined: 25 May 2002
Posts: 32
|
| Posted: Mon Jul 08, 2002 1:38 am Post subject: Re: exhaust popping |
|
|
| Tight valve maybe? It's hard to tune by email |
|
| Back to top |
|
|
rob_w
tinkerer
Joined: 19 Feb 2002
Posts: 395
|
| Posted: Mon Jul 08, 2002 11:37 am Post subject: Re: exhaust popping |
|
|
you mean like a miss? itll idle fine then pop and then fine idle again, sometimes 3 in a row, rapidly?
its normal dude, relax.
i dont know of any gem that doesnt have this problem. |
|
| Back to top |
|
|
CuGem
backyard mechanic
Joined: 07 Oct 2001
Posts: 599
|
| Posted: Mon Jul 08, 2002 1:29 pm Post subject: Re: exhaust popping |
|
|
hmmm, it's quite a loud pop but not as loud as the backfiring I get backing off. I'd almost go as far as to say a small backfire?
This engine never did this until yesterday. |
|
| Back to top |
|
|
fluid
rice boy
Joined: 12 Apr 2002
Posts: 36
|
| Posted: Mon Jul 08, 2002 9:37 pm Post subject: Re: exhaust popping |
|
|
My turbocharged Gemini started doing this the other day, it had been doing it for a while but it was definatly getting worse. I did a compression test and all compressions were perfectly even and none were too low (remember, this is a low compression turbo motor). I checked the tappets, they were all perfect. Thinking this was really strange I figured that mabye my spark plugs wern't quite up to scratch (gas is harder to 'fire up' than petrol especially on a low compression turbo motor), the spark plugs looked fine and were only 3000 klms old but I thought i'd give it a go....
Went down and bought the spark plugs, popped the bonnet and went to put them in when I noticed something out of the corner of my eye....
The inlet manifold gasket was blown out on the number one intake port, probably as a result of 10 psi boost and a cheap, paper gasket! I whipped off the intake manifold, replaced the gasket with a new, thicker fibre gasket, bolted everything back together and fired up the engine.
The miss was totally gone and the car idled far nicer, no more popping through the exhaust!
Check for induction leaks causing a lean mixture at idle....It fixed my car. |
|
| Back to top |
|
|
CuGem
backyard mechanic
Joined: 07 Oct 2001
Posts: 599
|
| Posted: Mon Jul 08, 2002 11:25 pm Post subject: Re: exhaust popping |
|
|
| thanks, i'll take a look tomorrow |
|
| Back to top |
|
|
Benjamin
backyard mechanic
Joined: 05 Oct 2001
Posts: 525
|
| Posted: Tue Jul 09, 2002 4:27 pm Post subject: Re: exhaust popping |
|
|
Normal, haha. You haven't heard mine running then 
Lublublublublulublublublublubbin, all day long. |
|
| Back to top |
|
|
alan
tinkerer
Joined: 07 Apr 2002
Posts: 429
|
| Posted: Tue Jul 09, 2002 11:09 pm Post subject: Re: exhaust popping |
|
|
| Well come around to my place and Ill show you some that dont do that. |
|
| Back to top |
|
|
fluid
rice boy
Joined: 12 Apr 2002
Posts: 36
|
| Posted: Tue Jul 09, 2002 11:37 pm Post subject: Re: exhaust popping |
|
|
I'll also show you one that dosen't 'pop'....
On a heavily modified G180Z turbo with a turbo grind cam.... |
|
| Back to top |
|
|
|
