I am just setting my timing after a rebuild and noticing that my pump seems to require a lot of advance to start nicely. Originally had it set at 1.05mm and could not start at all. With the cold start pulled it did eventually start and ran quite well.
When I did get it started using the cold start lever and then pushing the lever back off (engine still cold air temp at 25C 72F) it idled horrendously with timing at 1.05mm. Seems like the pump will need advance somewhere in the 1.15-1.2mm range for decent starting. I also noticed the cold start lever advances time around .20mm which seems a bit high.
I don't know to much about the history of the pump; It was purchased off a shop who had it rebuilt using Viton seals, put it in a new build, and then pulled the engine when the car was wrecked after a 1000km or so. Pump ran quite good on a tired engine but always had pretty bad cold starting. The part number on the LDA cover is 1 465 530 724 which is not a standard part number. The pump is 0 460 494 182. I assume the LDA cover should not effect operation in any way? Can some pumps just require significantly more advance?
Compression seems fine. Car runs and pulls hard when timing is advanced. Glow plugs are new and pulling full current, and there is a 4psi primer pump insuring there is always fuel at the injection pump. Also just to clarify the timing belt is bang on; it was set when the camshaft sprocket was reattached.
Cheers.
Topic: Different Pump part number requiring more advance? (Read 2170 times)
