soutie Posted October 17, 2006 Share Posted October 17, 2006 I ran the 110 on reserve a month ago on the way to Billing for a fair distance before filling up. On the way home I noticed that on tickover the revs where dying and surging. On filling up and adding a diesel additive the surging stopped. I have checked for air leaks in the turbo hoses etc and there are none. I also changed the fuel filter to be safe. Now however power is down. One has to really wind up the turbo to get going. The top speed has been reduced to 75mph and revs to 3000 - turbo pressure at max boost 1 bar. The pressure was boosted in 1999 when I had the larger intercooler fitted. It also kangaroo's when backing off acceleration now, real fuel starvation when not under hard throttle. What could the problem be? a. Crud in the fuel line? b. Faulty lift pump? - it starts fine so I are not sure on this. c. Faulty fuel stop solenoid that is starving the fuel supply? d. Fuel pump on the way our? Quote Link to comment Share on other sites More sharing options...
pugwash Posted October 17, 2006 Share Posted October 17, 2006 fuel pump needs repriming? Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted October 17, 2006 Share Posted October 17, 2006 If you've changed the filter, i'd suggest it was the lift pump. remove the filter you;ve got, stick a container under ther bracket where it goes and pump the lift pump, you should have some good squirts of fuel come out, this should determine whether the pipes are blocked. With the filter re-fitted, start the engine and crack open the bleed screw. fuel should come out at a good rate. whenever my pumps have gone bad, there isn't enough pressure or flow to keep the filter even full when the engine is running, let alone pump out the top. i took the screw right out and could see the fuel about 1" below the top of the filter. revved it up and the level dropped even further. Quote Link to comment Share on other sites More sharing options...
JST Posted October 17, 2006 Share Posted October 17, 2006 cr*p in the fuel pickup in the tank would be my guess. Quote Link to comment Share on other sites More sharing options...
Matt Neale Posted October 18, 2006 Share Posted October 18, 2006 cr*p in the fuel pickup in the tank would be my guess. Pete - That's what I said to you the other day! If you need it, I've a new lift pump on the shelf you are welcome to borrow/try. Can bring to Sodbury if you are going on Saturday? Matt Quote Link to comment Share on other sites More sharing options...
GBMUD Posted October 18, 2006 Share Posted October 18, 2006 cr*p in the fuel pickup in the tank would be my guess. As a result of running low on fuel? How so? Chris Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted October 18, 2006 Share Posted October 18, 2006 cr*p in the fuel pickup in the tank would be my guess. I've tried that before... it's really hard to get the aim right so it all goes into the pickup pipe without spilling over and landing on the top of the tank..... B) Quote Link to comment Share on other sites More sharing options...
Matt Neale Posted October 18, 2006 Share Posted October 18, 2006 As a result of running low on fuel? How so?Chris I've had this before on a Range Rover Chris. The pickup pipe (on the RRC at least) had a fine gauze mesh filter on the end. Running very low on fuel means that there is a higher concentration of general detritus in the fuel itself = more chance of the mesh becoming blocked. The constant suction of the fuel pump means that the filter stays blocked. I got mine running again by disconnecting the fuel pickip pipe at the engine and blowing through it - it popped the mesh filter off and restored full power. Still ended up changing the pickup / sender later though... Matt Quote Link to comment Share on other sites More sharing options...
GBMUD Posted October 18, 2006 Share Posted October 18, 2006 I've had this before on a Range Rover Chris. The pickup pipe (on the RRC at least) had a fine gauze mesh filter on the end. Running very low on fuel means that there is a higher concentration of general detritus in the fuel itself = more chance of the mesh becoming blocked. The constant suction of the fuel pump means that the filter stays blocked. I got mine running again by disconnecting the fuel pickip pipe at the engine and blowing through it - it popped the mesh filter off and restored full power. Still ended up changing the pickup / sender later though... Matt Not wholly convinced but it is the most plausable explanation I have heard. Chris Quote Link to comment Share on other sites More sharing options...
Andy Posted October 18, 2006 Share Posted October 18, 2006 i've seen the same in the past. only seems to happen on cars that never get run down to empty on regular occasions. Quote Link to comment Share on other sites More sharing options...
JST Posted October 18, 2006 Share Posted October 18, 2006 cuase thats what the probelm was with my old one ten, fuel got low, filter got clogged (and yes it did have a filter) this restricted the flow of fuel and therefore limited max delivery. removed filter and it all worked. i ran it from then without a filter in the tank guessing the inline one would do the job and as it was a tdi there would be enough built in tolerance for any other particles to make their way through to the exhaust.................... 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.