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We have a 94 Toyota Lucida diesel. Acceleration and power has decreased at higher speeds, can't get over 70, seems to chug and hesitate. No smoke, not overheating, have needed to add coolant though. Oil looks good. Any ideas?
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Check timing of the engine is right using an engine timing light. Make sure the timing belt or chain isn't worn or slack. The head gasket could also have gone and may need replacing.
Hi Is it a diesel or petrol motor? If it is Diesel or petrol then black smoke is a sign that it is using excessive fuel so it could be a blocked air filter or fuel filter. if it is a diesel motor. So check these 2 items first. The low oil level light is on because the engine needs the oil topped up, if you fill it to the correct level this will make the oil level light switch off. Hope this helps, let me know how you get on.
Probably the oil seal for the valves on the cylinder head are not good,oil is passing through then comes in the cylinder chamber,when it burn the engine oil it makes that white smoke.
put a 12 volt test meter on the battery with the engine off and get the reading.
then start the engine and retest the volts it should go up a volt ot two.
if the test readings are the same then the alternator is bad.
thank you
jm
I would really have that exhaust checked again, as well as have mechanic put fuel pressure gauge on & drive it up to that speed and see what happens fuel pressure wise. With exhaust, it's not only cat converter that could be causing reduced flow.
Is the check engine light on? Any more specific info like year, make, model, what color the smoke is, how many miles, etc........ This could help to narrow down the problem other than the smoke which all diesels do with quick acceleration. You might get a quicker answer if you are more detailed!
valve seals could be worn out letting oil get into the combustion chamber making that white smoke.if you have alot of miles of miles on your engine it just be time for a rebuild or replacement
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