TD42 flat spoting

[extra niss]

i have a early modal TD42 that intermitty flat spots in the mid rev range i have put a fuel filter on it. it did not help. it seams to do it more in the first 1 or 2 km of driving. any ideas all i can see is dollar signs in the injector pump
also it is non turbo

[Woop]

Nort sure how many KM's yours has done, but your pump may very wearing out. When i had the pump overhauled on my '89 td42 at 400,000km's, the shop told me that there was no sign of water or other contaminants--it was simply worn out... The low sulphur diesel reduces the injection pump life a fair bit. Injectors MAY need starting pressure/spray pattern checking

Anyway before going that far, make sure there are no restrictions in any of the hoses from the tank or air leaks--ie cracked hoses, loose fittings etc--check all the rubber hoses in the fuel supply lines. Make sure there is no obstructions at the pickup at the tank end--you can remove the sender through the access hole in the rear floor. Make sure tank breather is clear, and also if fitted, check the small filter on the inlet to the injection pump. Its in the top cover of the injection pump--remove the bolt that the bleed screw screws into and if its fitted, it should be in there.

[extra niss]

thanks for the help it only has 17000 kms on it and i was going to do the injectors soon. i will check all the pipes and so on sum one was telling me to day that the lift pumps wear out in them so if all else fails i will try a eletric lift pump

[killalux]

thanks for the help it only has 17000 kms on it and i was going to do the injectors soon. i will check all the pipes and so on sum one was telling me to day that the lift pumps wear out in them so if all else fails i will try a eletric lift pump

sure you dont mean 170000

[extra niss]

what he said 170 000

[Woop]

The injection pump contains the lift pump. If the lift pumps worn then the rest of the injection pump will surely be worn as well..

Nick