Stretch 123 Posted November 22, 2016 Share Posted November 22, 2016 (edited) Hi when I'm hitting 70 mph plus the td5 discovery starts to jerk yet any speed lower it runs fine . Any ideas what's wrong ??? Edited November 22, 2016 by Stretch 123 Quote Link to comment Share on other sites More sharing options...
Blanco Posted November 23, 2016 Share Posted November 23, 2016 Well, inexpertly I guess the obvious candidates are fuel starvation, (dirty filters damaged lines etc.) and just possibly the start of oil in the injection loom, but that tends to be more temperature associated rather than speed. Do you know when then diesel filter was last changed? has it been standing long? could there be a build up of condensation causing trouble in the fuel delivery line? Have you checked for fuel leaks at the pressure regulator? Have a scout round and come back with a bit more we can go on I think will be the general point of view. If you don't know the history of the vehicle changing the fuel filter is an obvious first step and may just hit the nail on the head. HTSH Quote Link to comment Share on other sites More sharing options...
sierrafery Posted November 23, 2016 Share Posted November 23, 2016 Might be overboost too and a common fault for that is the wastegate modulator or associated pipework Quote Link to comment Share on other sites More sharing options...
Stretch 123 Posted November 24, 2016 Author Share Posted November 24, 2016 I changed the fuel filter 4 months ago Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.