StuartHorne Posted July 4, 2016 Report Share Posted July 4, 2016 Hello TR experts, I am a member of 30 years and still learning about my TR6! I have recently fitted a refurbished Lucas PI and now a refurbish distributor; - it has been pinking, the shaft play was excessive, but all good and new now. Its timed at 12 deg BTDC, now the pinking has gone, but its huleva lumpy and 'missing/sluggish' at higher loads. It revs full range no problem at all on no-load. It has a fast-road cam and flowed head Its not done many miles over the recent 5-6 years [been building my house], but now want to get driving. The fuel may be a little old; but not convinced that is the problem. I'll refresh the petrol next weekend, but interested in any responses in the meantime. I am based in Gloucester, any TR specialist in the area, Google is not indicating as such. tks Stuart. Quote Link to post Share on other sites
barkerwilliams Posted July 4, 2016 Report Share Posted July 4, 2016 Stuart, I can recommend Spiro Tanti in Cardiff. http://www.classiccarscardiff.co.uk/about.htm Nice man, TR Register, South Glamorgan 07977403557 Alan Quote Link to post Share on other sites
DaveN Posted July 5, 2016 Report Share Posted July 5, 2016 Was the MU set up for the fast road cam? Quote Link to post Share on other sites
StuartHorne Posted July 5, 2016 Author Report Share Posted July 5, 2016 Hi, showing my ignorance, ; didn't appreciate the need to set the MU specifically for the Cam. I'll try the Cardiff contact. Thanks for the help. Stuart. Quote Link to post Share on other sites
Peter Cobbold Posted July 5, 2016 Report Share Posted July 5, 2016 Hi Stuart, and welcome. First I would check that what you think is TDC on the pulley really is. The damper rubber can distort and move the mark relative to the crank. Use the piston stop method to find true TDC. A distorted mark will mean the spark is too retarded, which wont help higher rpm running, and will also kill the pinking. My second guess would be fuel starvation at higher rpm and full throttle. Maybe a clogged fuel filter. Or fuel pressure falling off. Peter Quote Link to post Share on other sites
GT6M Posted July 5, 2016 Report Share Posted July 5, 2016 Every one running a PI should have a Pressure gauge, and wid a long enouff lead to go frae MU to inside cabin, check yer PSI at WOT and high revs, saves all the gess work Plug leads brek,n doon plugs dizzy cap rotor arm wrong valve clearances bloked fuel filters wrong petrol blocked air filter, this will mek it run weak at high revs, oppposite as to a carb. fuel press too low sticking PRV dodgy injector dodgy MU dodgy pump M Quote Link to post Share on other sites
roy53 Posted July 6, 2016 Report Share Posted July 6, 2016 FUEL PRESSURE is my guess as found out recently ,started fine and ran well but not top end which i hardly use. Corrected , now loverly . ROY Quote Link to post Share on other sites
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