checking pump timing on 2.5 N/A

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Tree Worrier

New Member
Posts
26
Location
Wales (the sunny part)
Hi, I am emitting blue smoke under load on a 2.5 N/A . I am not losing / burning oil and temp is fine. I regularly run forte diesel conditioner through the system and oil filter bath is clean. I havnt changed oil and filters for about 9K. The engine cold starts without problems and as I havnt checked timing since the engine was fully reconded 5 years ago(30/40K) I thought there maybe a slight adjustment needed to the timing .
Suggestions and diagrams please.
 
Morning Tree Worrier,

The only way that you can actually check your injection pump timing is by tinkering with it a little bit. Here's what to do:

Procedure 1
  1. Stand on the drivers side with the bonnet open and look down at your injection pump
  2. To the right hand side of the injection pump, nearest the radiator, you will see a bolt which holds the pump to the timing belt casing
  3. Mark a straight line accross the pump casing where it is fastened onto the timing belt casing so that you have a default setting to revert to should you bugger the timing up rather than improve it
  4. Slacken that bolt just enough so that you can move it, but there is enough friction to prevent the pump from spinning around
  5. Slacken any other bolts that are holding the pump in place, and slightly loosen the injection pipe nuts
  6. When you are happy that you've loosened the pump, tilt it ever so slightly away from the engine to reduce the timing (could be towards engine)
  7. Tighten everything back up and take her for a spin, to check for smoke. You will need to repeat the task a few times to get it absolutely spot on.

If you can't get that right, then there's another trick you can try:

Procedure 2
  1. Repeat the whole slackening procedure above
  2. Turn the pump towards the engine slightly
  3. Start her up and give her full throttle
  4. do you hear a loud clatter? If so, cut off the engine, reduce the pump timing slightly and repeat the process until you can't hear the clatter on full throttle

Remember, that if you think you've made hings worse, re-align the markings that you made on the pump casing and the timing belt casing to set it back how it was. It can be a frustrating process, but the tiniest of movements can make all the difference.

Good luck!
-Pos
 
was that engine and feul filters that have done 9k , they need changed at that mileage. pushing feul pump towards engine retards timing , away from engine advances. also only small movements like a 1/2 mil. at a time, then try. it can make a differance, do it with my n/a but can take a bit of time just to get it spot on.
 
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