Question about 1988 Toyota Pickup

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Chugs when cold normal when it warms up

Truck has 160K miles on motor. When I start it cold (even in the summer) it lopes like it's drowning with to much fuel. I can smell the unburned gas in the exhaust has black smoke, my mileage bites hard and it tries to stall (sometime does). But after it warms up a bit (the temp needle with a small space in between the bottom temp line) I can turn the truck off wait a minute or two and start it back up and it runs smooth as ice (one would never know there was no muffler on it) but I did constrict the end of the pipe a bit for back pressure. The plugs, fuel filter, air filter, oil, all new and I typically go between 55 and 60 mph going anywhere (taking a easy).

Any ideas would be great

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5 Suggested Answers

stormbrewin
  • 426 Answers

SOURCE: running rich and blowing black smoke

Could be a number of different things.Fuel pressure relief valve not working,injector pulse too long,Is the air box lid securely fastened and air cleaner clean.Are there no leaks between the air box and throttle body(intake tube).Have you checked oxy sensor.air flow meter may be also possible.Try squeezing the flexible fuel hose enough to allow the engine to run and see if the engine reacts better if it does you have excessive fuel pressure.

Posted on Nov 20, 2008

autodr
  • 260 Answers

SOURCE: EXHAUST LEAK INTO COOLING SYSTEM?

i assume its a 4 cyl?? will this car ever overheat if just sitting idle? when it begins to overheat, hows the heat in the cab? sounds like maybe the radiator is partially clogged or restricted somehow. i would change the radiator cap and make sure the overflow is set to proper level. (incl. radiator level) i wouldnt jump to headgasket just yet, they are pretty durable from what ive seen

Posted on Dec 16, 2008

  • 1 Answer

SOURCE: 1989 toyota 22re pickup lopes at idle and

Its possible you have a faulty EGR valve or PCV valve.

Posted on Feb 18, 2009

  • 125 Answers

SOURCE: 88 Toy, 22R Carb, hard cold start

in your carburetor there is a priming passage. look in there with the air cleaner out and pump the butterfly it should squirt gas. if it doesn't then you need to open the top part of the carb and clean the hole with a hair clip. if this is not the problem it will be the choke but I'm 70 percent that this is the problem.

Posted on May 25, 2009

  • 2 Answers

SOURCE: 1990 celica 2.2 5s-fe wont idle, wont erach 1400rpm

your problem is in your throttle sensor that controls the idle it is located right behind your intake and it has two screws that mounts it i am almost positive that this is where your problem is comig from

Posted on May 30, 2009

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When I put the gas petal to the floor first before cranking then cranks up smoke it coming out tail pipe and smelling gas


Hi there,

The starting technique you're referring to is not used on late model vehicles because of the fuel injection systems used. If you have a carburetor, when you press the accelerator pedal down, you're adding a lot (more than needed) of fuel mix to the engine. When it does fire up, what you're smelling is unburned fuel. Vehicle fuel is too rich at that point.


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Runs ******


if it smells like raw, unburned fuel, you may have an injector stuck open. i assume it clears up and drive good after a short warm up. there will be evidence of which cylinder has the bad injector by pulling out the spark plugs. the affected cylinder will be washed clean and smell like unburned fuel. the plug may also be "wet black" and of course smell like raw fuel.

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Yes, black smoke is nearly certain there's a lot of unburned gas going through. Did the check engine light come on? There may be trouble codes set, so the engine computer should be hooked up to a scanner to read or check for trouble codes. It could be an ignition problem: if a cylinder is not getting any spark at the spark plug, then the gas is not being burned, but is being pushed out the exhaust-maybe a little gets burned in the catalyst converter, why it smokes so bad, anyway. That's very 'not good' for the catalytic converter, also- can burn them out quick and ruin them, so you should get it fixed as soon as possible.
If there's a problem with the fuel pressure or the injectors, the place to start is with a fuel pressure check. It's the first step in checking the fuel system for a fault.
A robot? Not a term I'm familiar with, I just got home from a 500 mile round trip, Montana to Spokane, Washington to see an Alan Jackson concert and pick up my granddaughter after a long summer of being away from us. My oldest son and I split driving, but didn't see no robots, not in Washington, not in Idaho, not even in Montana!
So, check for codes, have fuel pressure tested, and check ignition, my best advice. Good luck. Is it an automatic gas pump, a robot?

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After the engine warms up. the oil pressure light comes on and the gage drops off . when i accelerate it returns to normal.


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