Right, got her running but she's very lumpy & idling at around 90rpm. So does that mean I need to slightly loosen the second row of bolts on the FIP and knock it forwards a touch. Guess the pump needs to be rotated anticlockwise a touch too. I'm still following Datateks plan as per timing but wondered if you guys knew which way I need to move the pump based on the description of performance?

I should add I matched the rotation of the pump up to the dirt outline around the flange where the pump had previously been.
 
Last edited:
UnitLandy said:
Right, got her running but she's very lumpy & idling at around 90rpm. So does that mean I need to slightly loosen the second row of bolts on the FIP and knock it forwards a touch. Guess the pump needs to be rotated anticlockwise a touch too. I'm still following Datateks plan as per timing but wondered if you guys knew which way I need to move the pump based on the description of performance?

I should add I matched the rotation of the pump up to the dirt outline around the flange where the pump had previously been.
Click to expand...
No good guessing, what modulation figure do you have with the engine hot? I assume that you mean 900 rpm not 90?
 
UnitLandy said:
Right, got her running but she's very lumpy & idling at around 90rpm. So does that mean I need to slightly loosen the second row of bolts on the FIP and knock it forwards a touch. Guess the pump needs to be rotated anticlockwise a touch too. I'm still following Datateks plan as per timing but wondered if you guys knew which way I need to move the pump based on the description of performance?

I should add I matched the rotation of the pump up to the dirt outline around the flange where the pump had previously been.
Click to expand...

I wouldn't touch the top of that pump unless it has been off. Just the act if retightening can affect the idle. It is very sensitive. You'll need a volunteer in the car ready to kill the engine if you tap it too far and it starts revving its nuts off.
 
It's been rebuilt. I put three grooves into to aid alignment.
20250625_112620.jpg


After rebuild.
Screenshot_20250723_224233_Video Player.jpg
 
Thanks lads. Right I've got my brothers Nanocom but I've never used one before. I belive it's set up already but I've no idea which menu selections I need to use. Could someone guide me through, cheers?

Yes I put grooves on the back of the mid section of the pump too for any lateral movement. I positioned that properly too

Before:
Screenshot_20250729_111848_Video Player.jpg


After:
Screenshot_20250729_111923_Video Player.jpg

Don't really have a good picture of it but I did check it after reassembly.

If the ball wasn't in the cup would it run at all? Can the ball be partially out of the cup?
 
UnitLandy said:
If the ball wasn't in the cup would it run at all? Can the ball be partially out of the cup?
Click to expand...
are we talking about the ball on the throttle activator being in the slide on the pump shaft if it not in the probability is that it will not run and also if the top housing is to far fowaed it wont run has this pump run at all?
are you getting fuel at the injectors?
if not try moving the top housing to the rear but if it does start it will rev high so switch it off and tap the top houing foward about 2 mm and try again
also use datatech method to time the pump
 
To read modulation the engine has to be running at max temp. You're looking for 50% for perfection but a bit either side of that doesn't make any real differance.
 
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