Phillhoare Posted December 5, 2016 Report Share Posted December 5, 2016 Evening all I've just reached the stage of attempting to start my TR4 after a lengthy rebuild and I have a problem with the fuel pump. As part of the work I rebuilt the original pump with a rebuild kit, diaphragm, valves, gaskets etc., but it didn't function so I took it to bits again and found that the rubber seal around the push rod was falling to bits. As I struggled to find a replacement I decided on a new pattern pump. I have now fitted this but still no luck. I have compared the dimensions etc. for the arm that goes on to the cam shaft and it appears to be correct and when I prime the pump with the lever it fills the glass bowl up effectively. But when I crank the engine over nothing comes out of the outlet. Any suggestions would be much appreciated. Cheers Phill Quote Link to post Share on other sites
RogerH Posted December 5, 2016 Report Share Posted December 5, 2016 Hi Phil, have you got the lever above the cam lobe. It is easy to fit the pump with the lever under the lobe. Roger Quote Link to post Share on other sites
Don H. Posted December 5, 2016 Report Share Posted December 5, 2016 I'd say it's gotta be the cam lever. Perhaps a small chance it's the diaphragm not fully locked into the lever. Can't see that the push rod seal has much to do but keep oil out of the system -- all the fuel should be on top of the diaphragm. Since priming works, it can't be the one-way valves. Quote Link to post Share on other sites
Phillhoare Posted December 5, 2016 Author Report Share Posted December 5, 2016 Thanks Roger, will double check that! Thanks Don, doh! Obvious about the seal now I've thought about it!! Quote Link to post Share on other sites
Phillhoare Posted December 6, 2016 Author Report Share Posted December 6, 2016 All sorted, must have had the lever under the cam lobe. Thanks gain for your help chaps. Phill Quote Link to post Share on other sites
peejay4A Posted December 6, 2016 Report Share Posted December 6, 2016 Excellent. Now send your old pump to Dave Davies to refurbish for about £50 and either fit that and carry the repro as a spare (I do this) or vice versa. Quote Link to post Share on other sites
Phillhoare Posted December 7, 2016 Author Report Share Posted December 7, 2016 Pete, sounds like a plan!! Cheers Phill Quote Link to post Share on other sites
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