Question about 1992 Buick Century

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I changed the oil, spark plugs, mat air sensor,new battery. But the car still run look like hesitate

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Your timing could be off or possibly you need a new rotor in your distributor cap or even a new distributor cap.. does your exhaust smell like gas or anything unusual like that it is running rich?

Posted on Oct 13, 2010

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1 Answer

What can cause my truck to hesitate at low rpms but idle fine and run fine at higher rpms?


-There is couple things cause that. Possibly:
-Spark plug too dirty, pack w/carbon, oil.
-Broken plug wire.
-Bad injector.
-dirty air flow sensor.

Good luck

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My vauxhall zafira 2.0 tdi will not start when cold,have changed battery and glow plugs but still same problem. have been told to disconnect coolant temperature sensor but do not know where to locate?


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had COLD START problem; cold engine does not start no
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What does a major tune up for a 2004 chevy impala consist of? What should be done and needs to be done?


New spark plugs, oil and oil filter, transmission flush and fill, fuel filter, air filter, coolant flush and fill, clean throttle body plate and bore, clean the MAF sensor, replace any loose or cracked vacuum lines, PCV valve, new air filter, new battery.

99% of the time all you should ever need for a tune up is new spark plugs, and a clean air filter and throttle body. But since your inquiry indicated "major" I gave it more critical thought.

Feb 18, 2011 | Chevrolet Impala Cars & Trucks

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Hi! my nissan sentra 1989 8valve engine, lately is very fuel efficient almost 12km /liter. but for now i think 4km /liter. i dont know why? pls. help me what im doing. thanks.


Hello! That is a significant change...I'll need a little clarification...Is the Check Engine Light (CEL) flashing?...Tell me how the engine is running...Do you see any smoke (blue or black) out of the exhaust?... Is the engine hard starting, idle poorly, hesitate or stall?...

If the CEL is flashing I'll send the procedure to identify the trouble code/codes that the Electronic Control Unit (ECU) has stored...

Guru.............Saailer

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5 Answers

I am having hesitation when start of acceleration. Already changed plugs, fuel filter


I had the same problem. New plugs, wires, fuel filter, air filter, MASS airflow sensor cleaned and still it would hesitate. It seemed to get worse when warm. Sunday I fixed the problem. Take the distributor cap and rotor off. Under the rotor there is a metal plate held on by two screws. Take the plate off, this will expose the optical Cam sensor. I took a can of MASS airflow cleaner (Plastic safe)(can buy at advanced auto parts) and sprayed heavily. Once it was dry I put it all back together and it runs like new.

Feb 10, 2010 | 1995 Mercury Villager

1 Answer

2001 mercury grand marquis. Engine stutters or hesitates with jerking when lightly accelerating. Seems like an air, fuel, or spark delivery problem. At wide open throttle this problem is not as noticeable....


Start car and use a squirt bottle of water to wet the wires and coil, if you see it spark or run rough one or both are bad, repair the wires first as they are more common.

Aug 02, 2009 | 2001 Mercury Grand Marquis

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2002 toyota echo


ignition wire or oil leak at cylinder valve cover to spark plug

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