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Triumph Repair/lost of power on 1980 spitfire

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Question
The car idles smoothly.  In neutral it gradually revs up.  If you quickly push on the gas pedal, it almost stalls out. In gear it has very little power.  This happened all of a sudden while driving one day.  The car has only 12,000 original miles on it.  and has been garage kept for 32 years. Do you have any suggestions of what I should check first.

Answer
Hi Robert,

If that car was brought to me in a dealership I would first run a compression test and check the ignition system and change the gasoline and check the fuel pressure. If all that were correct and ONLY if all that were correct I would check the diaphragm in the carburetor and check the oil in the top pot of the carburetor, as that is what takes the place of an accelerator pump on a domestic carburetor.

Howard

Triumph Repair

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Howard M. Fitzcharles III

Expertise

Triumph TR-4 up & Spitfire, and Engine theory

Experience

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.

Organizations
Associate member SAE EAA member

Publications
Import Car magazine

Education/Credentials
ASE Master Auto with L-1 certification up to 2000

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