Question about 1992 Chevrolet C1500

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'92 timing issues

I have a '92 C1500 that has a timing issue. Timing all checks out but it pinks something awful. I really detonating.

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I have a 92 4.3 liter engine that does the same thing but owner manual says that is normal with vortec heads

Posted on Nov 03, 2008


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On my 92 dakota with 3.9..cahanged ecu, coil pick up. crank snsr, cap, rotor, coil, ckd under fuse box, no corrotion ..just turns over, no fire

check that the cam shaft is turning . Back firing is a timing issue as it indicates ignition too early (inlet valve still open ) or valve timing out ( inlet valve opening too soon). Check that the immobiliser is operational.

Jan 09, 2014 | 1992 Dodge Dakota

2 Answers

1998 expedition 4.6 sputters.

I've seen this before. I replaced the coil pack, spark plugs and wires, just to be safe. I was getting a flashing engine light, common for a pre detonation or post detonation timing issue. I hope this issue clears up for you. Good luck!

Dec 15, 2013 | 2004 Ford Taurus

1 Answer

Why does my motor ping when under load i changed knock senser

Generally a Pinging noise isn't due to a knock sensor. It sounds like you may have Detonation issues.

I'd really check your spark plugs to make sure they are not fouled as well as running some higher octane gas to see if it helps.

basically, your getting combustion earlier then you're supposed to. This could be to various reasons.

Check in this order, Spark, Timing.

Check to make sure the spark plugs are all sparking and clean / properly gaped. Pull one coil/wire at a time off the plug to see if the pinging stop (pull a wire, start the car. Turn off car, re-attach wire, move onto next plug.) If it stops on a specific cylinder that means you're having detonation issues on that cylinder. If it never stops, then it sounds as though it could be timing related or have a valve train issue.

We'll start here and move on. Let me know what comes of this!

Mar 01, 2011 | 1994 GMC Sierra

3 Answers

1994 toyota 4x4 22re loses power when you push gas pedal or going up hill and the valves start to rattle then

I suspect your ignition timing is too advanced and the rattling sound is actually detonation (VERY VERY bad for your engine). Have your ignition timing set and your valves adjusted.

Apr 10, 2010 | 1994 Toyota Pickup

1 Answer

92 diamante ls detonation under acceleration (above 2500 rpm)

Check several items, Timing, failed knock sensor try better fuel, highr octane.

I hope this may have assited,

Apr 08, 2010 | 2000 Mitsubishi Diamante

1 Answer

We have a 1993 Chevy C1500 with a 5.7 that is dumping fuel at idle. We've put new injectors in it, new map sensor, O2 sensor, air control sensor, temp. sensor, new computer & chip, EGR sensor, Pickup...

something is creating alot of air to pass over the 02 sensor.

Low compression
Big vacuum leak.
Weak ignition
IAC stuck a little open.
TPS that is saying your foot is on the gas when it is not.
EGR stuck open a little.
Too low an idle
Weak spark plugs
Bad fuel pressure regulator
No vacuum to the fuel pressure regulator.
Bad coolant temp sensor.

What are the readings. Need to know the co and the hc reading in order to know if you have a misfire or an over fueling issue. All 5 reading are really needed to diagnose fuel related issues sight unseen

Dec 17, 2009 | 1993 Chevrolet C1500

1 Answer


check the detonation sensor.and low octane gas .if running 87 add a little 89 octane to see how it work .dont put 92 in it it will cause it to run horrible. check your manual to see what octane your car run better with.

Mar 31, 2009 | 1995 Nissan Sentra

1 Answer

I have a 1983 olds mobile 98 its makin a ticking/knocking noise

its pinking ....fuel pre detonating cause unleaded low octane rating.. CURE ,,easy check timing ,no more than 6degrees tdc ,use 98 unleaded ,and put some lead additive in with the gas

Jan 17, 2009 | 1994 Chevrolet C1500

1 Answer


replace plug and wires.have timing checked. have detonation sensor checked also have egr valve check to make sure it opens when it suppose to.if it dont open it will cause detonation.

Jul 26, 2008 | 1986 Volkswagen Jetta

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