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View Full Version : Slight misfire/hesitation ???



ihs61
30-06-2012, 10:52 PM
Hi

This question is for one of my computer illerate buddies.

He has a 55 plate A4 B7 2.0 Tdi 140 S-Line with 117,000 mile FSH.

It has an occasional very slight hesitation/misfire/judder, it has done this for the past couple of years but is becoming more frequent.

It happens when coasting along in traffic with a steady throttle pressure, ie just on. Engine revs 1800 - 2400, the moment he puts his foot down the cars away with no hesistation.

He's been told to ignor it until he gets a warnimg light as it will be easy to find the fault with vagcom.

He has tried a can of erg cleaner, load of crap from the exhaust but no improvemnt.

Any suggestions kindly welcom.

Ian

Crasher
30-06-2012, 11:00 PM
Has he had the injector recall done?

ihs61
30-06-2012, 11:13 PM
He has had the car for 3 years, in that time its not had any injector work done nor is their any mention in the service history.

Ian

a8 tech
01-07-2012, 07:18 AM
its a 140 not a 170 so no recall

Crasher
01-07-2012, 01:53 PM
its a 140 not a 170 so no recall

Quite right, missed that

We have had a few with split boost hoses and boost leaks. I spend a lot of time using my VAG pressure testing kit these days and I find a lot of boost leaks.