Question about 1993 Toyota Pickup

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Have a 1993 pick up truck,engine 2.4 L 22R E always keep burning the spark plugs what u think is causeing the pluges to burn

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Most common cause is a weak mixture ,if white in the middle and around the outside then its running to weak .

Posted on Mar 20, 2011

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Why the spark plug keeps burning after a couple of days.Then i renew it and it will happen again.


does it start every time
check list
running hot
too much revs and load
fuel mixture too rich /lean
coil problem
burnt valve
burning oil




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Jun 30, 2016 | Cars & Trucks

1 Answer

Excessive emission


Tune ups can radically change emission output due to the burn ratios. By burn ratios I mean the ratio of air, fuel mixture and time/amount of spark. If your burning to much or not enough fuel due to one of the fore mentioned it can cause nasty emissions. Not enough spark causes the ignition of the fuel to be delayed and hence a increase in the amount of fuel burned upon ignition, which increases bad emissions. Exhaust leaks or the catalytic convertor being well used are both culprits also. Exhaust leaks cause particles within normal emissions to solidify within the exhaust (most commonly carbon) then down the line they heat up and burn away into bad emissions. There is always some carbon build up within the exhaust system which is what the catalytic convertor is for. It acts as a filter to scrub away the carbon and other nasty particulates from the exhaust gases. Some of the particulates within will burn up due to normal use and create bad exhaust so when the convertor has a significant build up it needs to be replaced. A plugged catalytic convertor forces the engine to burn exhaust with the air and fuel when mixing which is not a good idea because it retards the engine (definitely bad for the environment and the engine - and the pocket book). I have seen a cheap and seemingly mundane fix work on numerous occasion, simply replace the gas cap. It has to due with the cap making a seal. If it does not seal properly the tank can suck in air during usage which lets more air into the fuel lines when pumped, which in turn increases the air to fuel mixture when sparked. That is always the cheapest fix but keeping up all other things with regular maintenance all really help the environment. Without proper testing it is impossible to guess what the actual culprit is but I hope this has helped both you and the environment.

Mar 24, 2014 | 1993 Oldsmobile Cutlass Ciera

1 Answer

I am not getting any spark on my 1993 chevy s10 4.3 pickup


common problem is dist rotor will burn a hole thru it, causeing rotor spark to ground out. this is caused by excessive spark plug gap, worn out plugs.

Apr 21, 2013 | Cars & Trucks

1 Answer

I have a 1993 pick up hardbody' a lot of black smoke coming out and idle is rough..any suggestions on what may be the problem?


With the black smoke, it sounds like it's running rich (too much gas going into the motor). Remove a spark plug and take a look at it- if it's all black and sooty, then yes, your motor's running too rich and you need to lean out the fuel mixture. I'm not positive, but that truck probably has a carburetor and you could do the adjustment yourself, with a little help from a shop manual. If it's fuel injected, you'll want to take it to a shop or a friend that knows what they're doing to get it adjusted right again.

If the spark plug has little tiny clumps of stuff stuck to it you're burning oil, and that's a bigger problem. An oil leak means a fairly major engine rebuild is in store for you. If it is burning oil, I'd just drive it like it is until it eventually conks out or something else goes wrong on it. Unless, of course, the truck is special to you and worth investing in an engine rebuild...

Good luck!

Jan 26, 2013 | 1995 Nissan Pickup

1 Answer

420 code catalyst system efficiency below threshold (bank 1). EGR replaced along with both upstream and downstream 02 sensors on bank 1. Check engine light keeps coming on.


You could have an enefficient converter. Question is what caused it to go bad? I have attended seminars on code 420, Possible causes are lack of spark or clogged fuel injectors. there have been times where the spark plug wire lays on the engine and over time it wears a weak spot in the side of the wire, its not enough to throw a miss fire code but it keeps the full amount of spark from getting to the plug and not burning the all the fuel in the cyl. A leaky injector would also cause to much fuel to be deliverd into the cyl and not get burned.

Hope this helps.

Jan 20, 2010 | Chrysler 300C Cars & Trucks

1 Answer

Blue smoke


Chances are if you are blowing blue smoke, you are burning oil.  Another cause of blue tint smoke is you are burning to much fuel and not enough air.  If the engine does not act erratic or acts like it is flooding out, then I would say you are burning oil.  The most common problem found with burning oil is either worn piston rings, bad valve seats/seals.  If the engine has high mileage, I would recommend any type of oil treatment.  Change your oil, filter included, use some form of engine treatment, run it for a few hundred miles, and rechange your oil and filter again.  If your engine has over 100,000 miles, I would highly recommend using an oil that is made for high mileage engines.  As this oil has additives that will help ease the aging engine.  If this doesn't work for you, I would say you need to have the rings and valve seals replaced.  You can do this yourself with a little knowledge of engines and pick yourself up a Haynes Manual at your local auto parts store if you do not already have one.  Hope this helps.  Feel free to comment if you need more assistance.  Please don't forget to rate.  Thanks!

May 31, 2009 | 1993 Honda Accord

2 Answers

Gas mixed in with engine oil


sounds like you have an injector that is staying open all the time,and dumping fuel all the time and not only when its time.It is most likely the one where the plug keeps fouling.The engine light is probally showing a misfire on that cylinder also,please take it to a qualified tech to have scanned and checked

Feb 06, 2009 | 1997 Pontiac Trans Sport

1 Answer

New spark plugs gone out


If the odor is not heavy gasoline, then they appear to be oil fouled. The cheap fix is to buy at any auto parts store oil burning plugs or sleeves, these will keep the spark plugs slightly further out of the cylinder, out of the oils way, and should provide a reasonable resolution.

Check the PCV valve and hose, if they clog they will cause oil to enter engien cylinders. keep me posted

Dec 17, 2008 | 1998 Oldsmobile Bravada

1 Answer

1993 ford explorer


HAVE YOU TESTED THE IGNITION MODULE, THEY HAVE BEEN KNOWN TO FAIL ON HI MILER TRUCKS AND CARS, ALSO MAKE SURE THE CHECK ENGINE LIGHT WORKS, IF IT DOES NOT THEN THE POWER TRAIN CONTROL MODULE EITHER HAS NO POWER TO IT OR THE MODULE IS BURNED OUT, THIS WILL CAUSE NO SPARK AS WELL

Oct 23, 2008 | 1993 Ford Explorer Limited

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