Question about 1993 Toyota Pickup

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1993 toyota 4-cylinder pickup 4x4

I have 199K miles on my truck. I tuned it up and put a timming chain, new value cover gasket, new plugs, distributor cap button, oil change. I also put in the gas tank several time injector cleaner.
The problem with motor is runs good but it ticks like maybe a value adjustment needs to be done but the main problem is like it is missing a lick while idling but you can't tell it by driving it. A mechanic just looked at the motor was idling and said it looks like it is running lean. It will almost stall out while idling. So far, no one has been able to tell what they think is wrong.

eMail back answer please topotts@windstream.net

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  • fathead1974 Jul 02, 2008

    my truck was idling around 500 rpms and we diagnosed an upper intake gasket leak and that was repaired along with the plugs and wires. my mechanic took off the egr valve and noticed that is was completely stopped up with carbon and he cleaned it out and it still is idling rough and low and stalls when i do not have my foot on the accelerator. what could be the problem still?

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Try cleaning the mass air flow sensor they get dirty and the truck will loose power and could also idle rough after removing it and cleaning remove battery post then try it for power

Posted on Jul 25, 2008

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