budge Posted October 22, 2013 Report Share Posted October 22, 2013 Have a 73 cr which will only run on tickover after a 15 Mile run. If tried to rev it cuts out. Fuel pressure at steady 100psi but does dip when i try to rev it. Recently had it timed at Local garage to reduce pinking. Have found that advancing the timing using the vernier scale to halfway the car will rev clean though seems to pink. Changing coil makes no difference. Recently replaced all Fuel system with prestige set up. Looking for ideas as best approach, already sick of the car as,darent go anywhere without it breaking down. With this apparent timing issue worried about causing damage to engine. It has lumenition electronic ignition and it appears to have the original distributor and i use valvoline additive Cheers Martin Quote Link to post Share on other sites
stuart Posted October 22, 2013 Report Share Posted October 22, 2013 Sounds as if your electrical supply isnt up to the job and 100psi isnt enough, it should be 105 at all times. Stuart. Quote Link to post Share on other sites
roy53 Posted October 22, 2013 Report Share Posted October 22, 2013 Martin say where you are as offers of help may come. ROY Quote Link to post Share on other sites
budge Posted October 22, 2013 Author Report Share Posted October 22, 2013 Hi Based in Southwestern ireland Quote Link to post Share on other sites
TR NIALL Posted October 22, 2013 Report Share Posted October 22, 2013 If you can get it to Clane Co.Kildare we can sort it. Quote Link to post Share on other sites
RogerH Posted October 22, 2013 Report Share Posted October 22, 2013 Hi Martin, as Stuart suggests the pressure may need upping. Have you done a volts check on the pump on tickover and rev'ing. Have you done a spray pattern test on the injectors. The pinking could be caused by oil in the combustion chamber and the garage has made the mixture too weak - what is the general state of the engine. Roger Quote Link to post Share on other sites
Jersey Royal Posted October 22, 2013 Report Share Posted October 22, 2013 Good Man Niall. As well checking the Volts at the pump, use a bulb. You may have 12 v but not the amps, the bulb wants to light fully. Most cars by now should have a relay powered supply with a nice supply wire. Cheers Guy Quote Link to post Share on other sites
Guest ntc Posted October 22, 2013 Report Share Posted October 22, 2013 It will run at 100 psi no problem,as Guy said check the wire supply is constant Quote Link to post Share on other sites
budge Posted October 22, 2013 Author Report Share Posted October 22, 2013 Thanks for the replies so far. Should point out that Fuel pressure is actually 105. Car starts first pull and runs very well at 105psi until it gets hot. If i Advance timing Fuel does not falter and revs ok, if i then back the timing off then it won't run. Quote Link to post Share on other sites
Guest ntc Posted October 22, 2013 Report Share Posted October 22, 2013 Niall will sort it for you Quote Link to post Share on other sites
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