Hello
I have a 2002 Disco 2 V8 with LPG conversion and need to sort out a rough running problem.
Driving steadily at, say, 30mph there will be a slight jerkines or hesitation when I accelerate, a bit like running over a rough road, less obvious at much higher speeds.
It does it on Petrol as well as on LPG.
I have Hawkey Diagnostics and carry it with me all the time!
When I start the car from cold in the morning it sounds quite rough as though it is missing on one cylinder and the engine management light will then come on with misfire on 4, cat damage etc. After a couple of minutes it then runs smoothly, I reset the fault and it will be ok for a day or two.
The jerky, hesitant acceleration on both LPG and petrol is my biggest concern.
Hawkeye never gives any misfire readings looking at live data for any cylinder.
Hawkey does show numbers against "rough running" especially at idle but the numbers fluctuate and are quite low.
I have magnacore leads and am fairly confident that all plugs are ok.
Lambda sensors (I replaced one 6 months ago) are reading ok.
MAF has been cleaned and as far as I can tell is ok.
New air filter.
I did breakdown and had to be towed in a while back and the mechanic changed the crankshaft sensor and fitted the magnacore leads.
Reading Rave it implies that it could be related to crankshaft sensor or camshaft sensor or MAF or any number of other things.
I really need your help here......
I have a 2002 Disco 2 V8 with LPG conversion and need to sort out a rough running problem.
Driving steadily at, say, 30mph there will be a slight jerkines or hesitation when I accelerate, a bit like running over a rough road, less obvious at much higher speeds.
It does it on Petrol as well as on LPG.
I have Hawkey Diagnostics and carry it with me all the time!
When I start the car from cold in the morning it sounds quite rough as though it is missing on one cylinder and the engine management light will then come on with misfire on 4, cat damage etc. After a couple of minutes it then runs smoothly, I reset the fault and it will be ok for a day or two.
The jerky, hesitant acceleration on both LPG and petrol is my biggest concern.
Hawkeye never gives any misfire readings looking at live data for any cylinder.
Hawkey does show numbers against "rough running" especially at idle but the numbers fluctuate and are quite low.
I have magnacore leads and am fairly confident that all plugs are ok.
Lambda sensors (I replaced one 6 months ago) are reading ok.
MAF has been cleaned and as far as I can tell is ok.
New air filter.
I did breakdown and had to be towed in a while back and the mechanic changed the crankshaft sensor and fitted the magnacore leads.
Reading Rave it implies that it could be related to crankshaft sensor or camshaft sensor or MAF or any number of other things.
I really need your help here......
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