Club G40 Forum

Technical => Engine and Transmission => Topic started by: Chrisg40 on July 24, 2015, 08:34:28 PM

Title: Over fuelling issue
Post by: Chrisg40 on July 24, 2015, 08:34:28 PM
Need a bit of help,
Had a stage 2 charger, it broke, so I bought a full blend charger, haven't changed anything else but it's over fuelling but only sometimes and it's completely random ???

Any ideas???
Cheers
Chris
Title: Re: Over fuelling issue
Post by: GR40 on July 25, 2015, 11:39:39 AM
Co-pot would be my first guess or a messed injector. What do you mean exactly by over fueling? What are the symptoms?
Title: Re: Over fuelling issue
Post by: Chrisg40 on July 25, 2015, 05:12:40 PM
Loss of power and black smoke from the exhaust,  I've already checked the resistance on the co pot is there any other way to check if it's that?

Title: Re: Over fuelling issue
Post by: GR40 on July 25, 2015, 06:18:08 PM
Remove the co-pot, stick a finger in the hole and see if there is anything blocking it. I have said it before and I am gonna keep saying it, the metallic ring at the end of the plastic pipe that prevents it from caving in when you tighten the silicone hose, can slip inside the pipe and it will block the co-pot causing all short of weird random power loses.
Title: Re: Over fuelling issue
Post by: Chrisg40 on July 25, 2015, 08:07:41 PM
Okay I'll have a look
Title: Re: Over fuelling issue
Post by: Chrisg40 on July 25, 2015, 10:39:26 PM
Had a look earlier, there's nothing blocking the co pot
Title: Re: Over fuelling issue
Post by: GR40 on July 26, 2015, 07:51:42 AM
I would remove the pipe and check inside it and I would clean the co-pot with some alcohol. Take the spark plugs out too and check them, if one cylinder isn't firing the fuel will be going straight out the exhaust. Check your distributor for oil or water. Liquids can get in there causing short outs.
Title: Re: Over fuelling issue
Post by: vwmk3jon on September 12, 2015, 11:51:49 PM
Mine does this. I adjusted the CO pot down which put less fuel in but then it wouldnt boost. Checked the plugs and theyre sooty so i gave em a clean which sorted out the poor running for a while.
Title: Re: Over fuelling issue
Post by: ereeiz on October 31, 2015, 12:02:54 AM
lambda sensor?