Hi Richard Step one is to look if you have advanced EVAPS, is there a small valve on the bulkhead with what looks like 2 fuel pipes going to it and an electrical connection.
If so you have a well known condition and its an easy fix. Advanced EVAP draws fuel tank fumes from the carbon canister mounted near the fuel tank and breathes them through the engine where they are burnt off. Trouble is caused when you overfill the tank and fuel instead of fuel vapour is spilt into the carbon canister so when the purge valve opens the car draws fuel instead of vapour into the intake. Its a little similar to pulling out the choke. The system is ECU controlled and cycles once the engine is warm, the fix is to ovoid overfilling. It will clear itself but could leave you in a dangerous position plus it will eventually damage the Cats. Hope that's all it is. BR Colin On 30 June 2012 12:47, Richard Jones <[email protected]>wrote: > Had a slightly odd one yesterday. > > Left Kent for Theale, Berks just around 5.15 am for a work appointment in > Theale, Berks - lovely blue skies. I had a full tank of Esso (95) from my > regular garage. Uneventful journey as far as Bracknell, few showers of rain > and heavy cloud cover, so had dipped beams on and wipers intermittently; > Friday traffic not that bad so cruised with the outside lane traffic which > in the +8 is around 3,000 rpm give or take. As I needed to get back home > later without stopping, I topped up the tank at the Shell garage on the > A322 passing through Bracknell, another regular stop (again 95 octane) and > the headed out of Bracknell on the A329M still overcast so had dipped beams > on again (mix gear work, accelerate, cruise, accelerate, cruise for about 5 > miles) and turned off onto the M4 towards Reading. I merged into the > traffic and sat on the inside lane for a while as traffic was heavy at > around 65-70, then in 5th geared accelerated to move into middle lane, but > the engine fluffed and wouldn't accelerate. I eased off and car continued > to cruise normally. I repeated this 3 times with same result and then at > the next go it accelerated as normal. I then slowed and tried again and > had the same problem 3-4 attempts and then it cleared again and I then ran > on without any more problems and exited the M4 at Theale drove through the > business park as normal and arrived at our offices. I left at 3pm and drive > home in nice sunshine without any problems whatsoever apart from a few > traffic holdups. > > Not sure where to look and if this was temprary, or signs of a problem > brewing. Don't really know if this is fuel or sparks related, or which > sensors may be involved, or some water/dirt in the fuel system . I had > the fuel related relays changed last year, fitted a new > Odyssey PC925 (28Ah) as recommended by this group for the last 800 miles > (ammeter was shows a good rate of charge (14 no load 13.5 with dipped beams > and demister fan), It was serviced back in May, so not sure where to go > next. Its a '95 3.9 hotwire with twin Librands exhausts, Tornado chip, K&N > filter and the fuel pressure runs a bit higher than standard as I have a > remote fuel pressure valve fitted. All these parts have been on for 2-3 > years. Thinking back over the 4 years I have had the car, very very > occassionaly (I mean 2-3 times in 4 years) I have had a very minor cough > when accelerating under load, but this was a pronounced wheeze in > comparison. It felt more fuel related to me, maybe a MAF meter malfunction? > > Any thoughts? > Richard M800RGN+8 > > View posts on The Mail Archive > http://www.mail-archive.com/[email protected]/ > Modify<https://www.listbox.com/member/?&;>Your Subscription > <http://www.listbox.com> > ------------------------------------------- View posts on The Mail Archive http://www.mail-archive.com/[email protected]/ [http://www.mail-archive.com/[email protected]/] Modify Your Subscription: https://www.listbox.com/member/?member_id=22459785&id_secret=22459785-4a39ddf8 Powered by Listbox: http://www.listbox.com
