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Triumph TR-4 up & Spitfire, and Engine theory
Dealership line mechanic on MG, Triumph, Jaguar for 15 years, Instructor in commercial mechanics school 2 yr. Product information manager for piston and valve manufacture, Instructor & hotline answer man for import car parts importer 15 yrs.
Associate member SAE EAA member
Import Car magazine
ASE Master Auto with L-1 certification up to 2000
Hi Stan, You first have to confirm that current is getting to the starter past the solenoid which you can do with a 12v test light. Then after you have done that to do a voltage drop test on the power
In the dealerships we were paid by commission so we could not waste any time when adjusting valves and the quickest way was to remove the spark plugs and put the car in 4th gear with the brake off. We
Hi Duane, No, and why would you want to do that? It was a time saver on old Ford V-8s if you were doing dozens a day when they had self locking adjusting screws but the TR-6 engine does not have self
Hi Stan, That is not normal for any kind of starter. You need to test the amount of voltage drop at the battery when trying to spin the starter. Then do "Voltage Drop" tests of the (+) and the (-) cables
Hi Duane, There are several things that can give valve noise so each needs to be examined. First is valve lash. It should be .010" on both intake and exhaust. Worn valve guides can also make valve noise

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