The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Re: Slight engine missing(car jerking a bit) (archive)
[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]
Posted by Adrian on December 31, 2000 at 05:25:51:

In Reply to: Slight engine missing(car jerking a bit) posted by Darren M on December 30, 2000 at 20:56:22:


I have only noticed this a couple of times. Once was a few weeks ago just cruising slowly through my town at low rpms. It might be doing it at other times but i`m not noticing it.

Over the Christmas hols I have done two 200 mile journeys to my home town and back. On just a couple of occassions only I felt the car jerking a bit at low rpms when under light acceleration(say about 2000rpm or a bit less and with slight pressure on throttle).

Any ideas on this guys? I am going to start by trying a different grade of fuel. I mostly use super unleaded but recently filled up with premium unleaded twice instead and I`m wondering if it is tuned to use the super unleaded fuel.

About 2 months ago I had to have a new *brain* fitted to the car and maybe some extra tuning wasn`t done properly or something when that was fitted? Just before the ecu was fitted it had an Inspection 2 and all was fine with that.

Like I said I have only noticed it on a few occassions so far, but just wondering what it could be.

Darren M

Part throttle performance sounds like ignition probs, I would :

Let the engine idle when it is dark and the bonnet is up and look for blu sparks and ticking from the leads. also have a screw driver and brush the blade along the leas touching the cam cover this will encourage the leaking spark if it is there.

Secondly buy a new set of plugs (My guess is it is plugs, probably combined with shit fuel)

Thirdly try a tank of Super I run mine on super and it does run better and feel crisper, but it doesn't miss on 95 Octane


Follow Ups:


[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2008 Jump Internet Inc. All rights reserved.