SOURCE: hyundai accent 1999 failed emission mot test
there are many
systems in your car that could cause it to fail emissions tests. lucas will not harm your car but it will not fix the problem either. the emission test should give you a reason for the failure. you should be able to track down the problem with step by step procedure for that particular system.
is your check engine light on? any generic scan tool can scan the vehicle data to determine witch system may be causing the problem. could be as simple as a tune up or a faulty o2 sensor.
SOURCE: i am doing repairs on
better chec the wiring or connections 1st--pull the plug from the pump and inspect for flaws and corrosion then plug back in--pump itself can be tested--the fuel injection pump in engine area may have issues
SOURCE: when to replace timing belt
A timing belt can last 50,000 miles or the life of the vehicle. In all honesty, you just never know. It all depends how the belt looks. If it is wore or missing teeth, then it would need changed. But, without seeing it, I would recommend changing it at 100,000 miles. They almost always last longer then that.
The PMD module, (also referred to as the "Fuel Solonoid Driver") has been a major problem for Chevy / GMC 6.5L diesel owners since the introduction of the 6.5L electronically controlled DS4 fuel injection pump. It has been determined that heat is the primary cause of PMD failures. The PMD is mounted to the side of the fuel injection pump from the factory. But the injection pump does not provide adequate cooling to keep the PMD functional. Once the engine begins showing symptoms of hesitating, stalling and hard starting, the problem will only worsen with time. The problem only becomes more serious when considering the potential danger of your engine stalling in a situation such as pulling into heavy traffic or descending a steep hill and losing the use of power brakes and steering. 377 views
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