Has my pump been turned up ??

iv just a 200 tdi to replace my 2 1\4 havent drove it yet but when you rev it free standing it smokes quite alot but its black and on the pump theres a couple of threaded bars stickin out with a hole through the end with nowt there and iv seen some thing similar on othere pumps with a bit of wire through it with a crimp on so you could see if its been tampered with thanks.

mickdj said:

iv just a 200 tdi to replace my 2 1\4 havent drove it yet but when you rev it free standing it smokes quite alot but its black and on the pump theres a couple of threaded bars stickin out with a hole through the end with nowt there and iv seen some thing similar on othere pumps with a bit of wire through it with a crimp on so you could see if its been tampered with thanks.

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The threaded bars are surely for limiting the throttle movement, that is, the UPPER and LOWER governed engine speeds.

One threaded bar is tickover - that's the one the lever leans on when you do NOT have your foot on the throttle. The other one limits top engine REVS. It does NOT affect power lower down. The engine will probably self-destruct if the upper limit top revs setting is allowed to go up more than a little.

The black smoke when you deck it from slow revs means an expert has been in the pump and has set the max fuel delivery a bit too high. The answer is to press the throttle down more progressively.

CharlesY

ok thank how does it useally effect the mpgs

i would imagine that a pump set to pass more fuel throught it, will equate to less miles per gallon as you will be burning more fuel.

I may be wrong

G

i turned the pump up on my 300tdi and have not noticed any loss in fuel economy.it all depends on how heavy your right foot is.the gain in power when the pump is turned up is well worth any slight decrease in mpg as it gives you the confidence to actually overtake or pull out of junctions without ****ting yourself wondering whether you are going to make it without getting wrote off!