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Omega General Help / Running issues, diagnostic advice needed
« on: 02 November 2016, 20:25:56 »
Trying to help out one of our brethren Tony who has long running issues with his 2.5, it's had new plugs, leads and dis pack but the following persists , in his own words:
"The symtoms are as follows, missfire under light throttle. (seem harder to start from cold in the last week) running seems to slightly improve as the engine warms up, when driven hard the "miss" seems to clear and the firing is normal until desired cruising speed is reached them as the throttle is backed off the "miss" returns. mpg has taken a beating down to 13 MPG around town"
I have the unmentionable diagnostic device and have no intention of using it for programming but am happy to look at any monitors/values to try and narrow down what may be wonky so would be grateful if you guys could advise what we need to look at and what the normal values would be, lambda switching , fuel trims and anything else useful etc
"The symtoms are as follows, missfire under light throttle. (seem harder to start from cold in the last week) running seems to slightly improve as the engine warms up, when driven hard the "miss" seems to clear and the firing is normal until desired cruising speed is reached them as the throttle is backed off the "miss" returns. mpg has taken a beating down to 13 MPG around town"
I have the unmentionable diagnostic device and have no intention of using it for programming but am happy to look at any monitors/values to try and narrow down what may be wonky so would be grateful if you guys could advise what we need to look at and what the normal values would be, lambda switching , fuel trims and anything else useful etc