Question about 1991 Nissan Pickup

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It sounds like real bad ping when the motor is idleing or when you get on the gas

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The engine is pinking [detonating], caused by ,weak mixture ignition timing too advanced ,very high compresion ratio,low octane petrol,,carbon deposits in head glowing igniting the mizture before its supposed to

Posted on Jul 07, 2010

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1996 S10 Blazer revs up and down and idles high. Stalls when smash on the gas? whats the problem


Idle air control motor. On the side of the throttle body. Either real dirty or bad.

Aug 06, 2014 | 1996 Chevrolet Blazer

1 Answer

Why does my motor have a pinging sound


You did not mention when this pinging occurs (all the time? idle? lugging under load?). If it is in fact in the engine, it is most likely a timing issue which can get complicated because it could be caused by a problem with the distributor, timing chain or chain tensioner, one or more faulty engine sensors, etc.

However, there are other causes of this noise. Most pinging noises at idle or low RPMs are not usually in the motor itself but rather from rotating parts that periodically touch something, and often happen when something comes loose or is bent, bearings get worn, or something made it into the engine compartment that shouldn't be there (a tool, a rock, etc.). Typical examples are worn out HVAC fan, cooling fan or AC compressor clutch bearings; a cooling fan blade touching metal or a loose shield; and so on. If this is the case, you should try to locate exactly where this noise is coming from - a stethoscope from an auto parts store may help.

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Car stalls when foot off gas pedel does not hold idle


these trucks are equipped with an idle speed control motor. What you're describing sounds like that part has stopped working. The part is designed to maintain idle when gas pedal is released. Now if you hear an audible hissing noise under the hood, then theres a vacuum leak which can cause the same problem, but it sounds like the idle control motor. Good luck.

May 08, 2014 | 1999 Ford Explorer

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What would cause my 1994 f150 5.8 engin rattle when the motor is rived up


sounds like its pinging. could be bad gas, or bad spark plugs, or timing problems

Apr 09, 2014 | Ford F-150 Cars & Trucks

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2001 ford sport trac put it in drive or reverse and let it idle and it shakes real badlike the motor is about to fall out give it gas and goes away check engine lite not on and no codes found only...


It sounds like you have a bad motor or transmission mount. Open your hood, and have a friend start your vehicle, and put it into drive. Observe the engine to see what is vibrating.
Matt

Jun 26, 2011 | 2001 Ford Explorer Sport Trac

1 Answer

Pinging noise from the the engine


Pinging is a sign of low octane fuel in the tank or the engine may have jumped time if the vehicle has high mileage, I believe the Lincoln has a timing chain rather then a timing belt, the chain is much stronger and lasts at least double to triple the amount of mileage a belt lasts.
Have a shop run a timing strobe on the crank to see where your timing marks are in respect to the factory requirements, if the car is timed properly and there isn't anything wrong with the gas in the tank(try adding an octane booster to see if that helps allieviate the ping) then test the computer system for any possible codes, perhaps the 02 sensor is bad or the I.A.C.(Idle Air Control Motor) is defective causing the engine to run too lean and ping, a code stored in the computers memory will reveal this.

Jun 09, 2010 | 2002 Lincoln Continental

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I have a 2002 grand marquis,140 thousand miles...i change my oil on the regular,i take good care of the car..my problem is on my last oil change i noticed a slight tapping noise like the valves where...


a knock sensor is basically a resistor and a spring, and what it does is it reduces valve ping. Valve ping is when the fuel is not properly burned and tries to explode before the valve is fully closed and it will make a pinging noise when under load or at higher RPM. If the sensor is bad it can cause detonation, detonation is when the fuel explodes before the valve is closed and can cause a cracked, or exploded piston, bent valves etc. Your problem does not sound like that of a bad knock sensor, predominantly you will only hear the "ping" under load and not at idle and if it was bad your check engine light should be on. this sounds more like a rod knock. change the oil again and use only AMSOIL and an amsoil filter, amsoil is proven to last longer than any other oil, 600,000 miles without a change, or a filter change.

Feb 05, 2010 | 2002 Mercury Grand Marquis

1 Answer

2003 f150 supercrew 2wd 4.6 romeo has 62000 miles.Pinging noticed when thermostat opens after cold start.Pinging occurs with most throttle positions/loads except full throttle (cant hear it) or idle.EGR...


do not use any fuel additives at all. and only use 87 octane fuel nothing higher. 4.6 and 5.4 ford engines do have a pinging sound especially with a load. but it is normal

Aug 19, 2009 | 2003 Ford F150 Regular Cab

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Ok we have a 1989 rx7 turbo 2 swap and we got the motor in but when you start it up it idles perfect and you can push the gas real slow in and it will rev up fiine but if yu punch the gas it dies and...


mmmm. familiar thing, get a compression test done, should read about 6-7bar of pressure, i had same thing when i got a second hand one, done test and one of the rotors pressure was down,

Apr 11, 2009 | 1989 Mazda RX-7

1 Answer

00 ford zx2 idles ruff in gear so bad it shakes


.how to set the timing on a 2000 ford sescort zx2 and why does it idle rought it a dual kam 2/0 timing belt broke and the engine was fixed in a shop but i dont think they know just how to set the timing right when im going up hill and the car shifts back the engine reves up to about 3000 rpms the engine sounds lick it is pinging real loud sounds like it not set right

Mar 03, 2009 | 2001 Ford Escort ZX2

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