Mechanic needs to go back to basics. Engine on the TT isn't easy to get around so checking is no small thing.
Basics, in case your mechanic has forgotten are - timing, compression, the right amount of fuel in the combustion chamber at the right time and a good spark also at the right time.
If you have all those the engine will start and run, the engine doesn't so at least one of those essentials is absent, discovering which one(s) is what checking is all about.
I suggest the immobiliser is checked first. If the mechanic has some decent test gear he should be able to see some live data, oscilloscope patterns, etc., even at cranking speed, which would take some of the backache out of the job.
If there is no live data, etc. or what you are getting doesn't make sense maybe the management ECU died or there is a wiring or supply fault. An ECU is often weakened by welding, jump starting, boost charging and other stuff done in the name of car stuff - such weaknesses rarely show up straight away but cause trouble later.
It is also worth keeping in mind it isn't unknown for a catalytic converter to become blocked.
Good luck!
SOURCE: Timing Belt Problem-6 cylinder Saturn wont' start
If your timing belt broke, then it is possible that the valves in your engine got bent, which won't allow the cylinders to pressurize the fuel/air mixture, and it will let all of the mix to flow freely into the intake/exhaust manifold. This can be checked with a pressure tester that is threaded into the spark plug opening. A mechanic should have one, or you can probably find one at an auto parts store.
SOURCE: Car Shuts off after driving
either needs a new ignition relay or the wireing harness was not properly reconnected when the transmition was installed
Testimonial: "Taking it in tomorrow morning and I will definitely mention this. Thanks"
SOURCE: I have a 1999 Jeep Cherokee.. recently it started
Please this is a fuel system related problem.
Check the fuel pump located in the fuel tank beneath the back seat.
The fuel pump has dropped in pressure.
Good luck dear.
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Testimonial: "Good suggestion!"
SOURCE: 2004 Kia Optima no start after timing belt, crank, cam sensor replacement
did you use aftermarket crank sensor? if so that might be your problem. dealer has several different ones, by providing vin number, but there is only one after market for all optimas 01-05. try to connect thick pink wire and thick orange wire together on the ignition failure sensor. you might have the same problem as me. good luck.
SOURCE: 1997 Ssangyong Musso engine has erradic idle & intermittent start
i think the problem is in the fuel line. i have encounter it too.. the best way is to replace all fuel filter. muzzo have 3 fuel filter. 2 located at the engine and the other one located at the fuel tank they called it as strainer. u can see the opening of the tank underneath the back seat of the car. also good suggestion clean the tank. duel dirt is the main cause of your problem cause muzzo have only a small tip that why only little dirt can cause plunging in engine. sory for bad English
The 2000 Audi TT 1.8 liters engine rear chain & tensioner set up:
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