Vehicle & Technical > Range Rover

HELP NEEDED FOR POORLY RANGE ROVER

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Garth:
Hi All

Just had my Dad on the phone.  He is away on holiday and his 1991 RRC 3.9 Auto has developed problems.

Put £10 of cheap petrol in ran but very hot and pinking slightly.  Filled tank at a national brand filling station and problems started.  Ticked over OK apply throttle engine starts fluffing and misfiring and stops.  Wait a couple of minutes does same again.  Leave ticking over and was fine for 20 Min's touch throttle and starts fluffing and misfiring and stops.  
Now wont start at all and is gently backfiring through air filter emitting a cloud of black smoke.

Fitted spare coil and ECU no difference.  100% certain it was a petrol pump and smells like petrol.

Any ideas anybody

Thanks

gtomo2:
yea sounds like cr*p in the fuel filter or something blocking the fuel pipe. take filter off and clean it out. but with the bad fuel still in you may have to do it a few times til it cleans it self out

Garth:
Hi all

Checked fuel filter and it was clean (no debris at all but it is quite new)

clbarclay:
How cheap was the cheap petrol. I'm not 100% on petrols, but sounds a bit like the octain rating of the cheap petrol was too low.

Have you tried draining out all the petrol from the tank and the system (probably still have cheap fuel in the pipes etc) trying again with high octain petrol. Drain the fuel into a suitable container so that either you can put it back into the RRC or keep it for degreasing components during any future repairs.

Garth:
Due to being on a caravan site in Yorkshire draining the tank is not an option.  

Is it worth adding some "octane booster" fuel additive??

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