95 corolla sometimes it starts somtimes not ,it allways turns over

car has 188,000 on a 1.8 (7a-fe) well maintained ,oil changed every 2500 . mom and dad went to v.a., road back home from virginia to s.c. on the way home mom and dad stopped at gas station and did not pay att. to the gas they were putting in the tank ,it had half tank of 89 octane and filled it up with 85%ethinol .drove home. next couple of days driving were put on the car on same tank of gas when the car got to eighth of a tank mom stopped at mail box car shut off. turned the key it started right up.drove to gas station 1 mile away got gas drove to sisters and as soon as she pulled in it shut off left there went back home 2 miles away got in yard shut off. from then till now this is what it is doing,somtimes it will start sometimes it wont whenit does start it will idle fine if you give it a mild exell. it will die if you give it a hard exel. it will die if you move it real slow it will gain rpm's to a certain point ,that point is when a load is put on it. also, sometimes when you try to start it it will pop 1 time through the intake with white smoke. checked tpi senser was out so changed it still same prob. also the engine light is NOT on. i have never seen or herd of this prob HELP!!!!!!!!!!! !!!!!!!

Reply to
gadgets
Loading thread data ...

In the future, your posts would be easier to read if you typed using conventional formatting, like capital letters at the beginning of sentences, and a double space at the end of each sentence.

The pop is an indication that the mixture is too rich.

It is possible that an injector is leaking or not closing all the way. Other possibilities are the idle air control valve, mass air flow meter, and oxygen sensor. These need to be checked by a competent technician. Check for cracks or holes in the intake tube between the air filter and throttle body.

Reply to
Ray O

I'm cleaning it up and highlighting the essentials, in case you missed it Ray:

So far, so good. If you take care of it, 188K and the car should have some life left in it.

And that's the rub that I'll bet Ray missed, Toyota's normal production cars aren't set up to run on E-85 fuel - 85% Ethanol 15% Gasoline blend. It's not the fuel itself that is the culprit, a properly designed car will run on E-85 fine.

It's the effects of that fuel on all the fuel system components. Rubber fuel hoses, various synthetic gaskets and seals in the fuel rails and the injectors, and also corrosive effects on some metallic components like the injector pintles.

In other words, "Strange Shit Will Happen. The fun part is, you never know exactly what, and how bad."

Delayed reaction to the wrong fuel would be my first guess as to where to start looking. It will take time for the alcohol to attack the parts, so having it keep running fine through that one tank of fuel would be expected.

You may have messed up the seals inside the fuel injectors, and they are leaking and running too rich. Or something is clogged up in the fuel system, the fuel pump or pressure regulator has failed and there's no pressure, and it's an over-lean.

When you get the car running can you smell excess fuel at the tailpipe? And once it gets a chance to warm up and start working, does the catalytic converter get really hot under the floorboards, possibly to 'glowing red' heat? That would be a sign of running way too rich.

Someone will have to start checking the fuel system at square one - fuel pump output pressure, flow test through all the filters, whether the injectors are actually squirting, messed up fuel pressure regulator that sends all the fuel right back to the tank...

Many things can be causing this, and you (or your mechanic) need to diagnose it systematically - check and eliminate each potential problem, and you'll hit the real problem as you go down the list.

The checklist of potential problems causing a 'no-start' or a 'starts, no power and dies under load' will be found in the service manual, as well as the methods used to check each one - do you have a service manual?

My vote.

When you hear hoof beats, you look for horses. These are all good things to check and eliminate, but they are not fuel-wetted components. Unless it's serendipity that they broke at the same time, or he broke them while working on the car (the air intake hose) they aren't likely to be the smoking gun that caused the no-power condition.

-->--

Reply to
Bruce L. Bergman

I concur with everything Bruce suggests but I'm not so sure that 1 tank of E85 would ruin stuff that quickly, especially since it was used on a road trip and so the alcohol didn't have a long time to dissolve stuff. What I am wondering is whether the alcohol dissolved varnish or buildup somewhere that lodged in the injector pintles, which is why I suggested that an injector might not be closing all the way. A bottle of fuel injector cleaner probably wouldn't hurt, but I think the OP needs to have a pro drive and look at the car.

Reply to
Ray O

Reply to
gadgets via CarKB.com

Ethanol is a very powerful solvent. And the car in question is high mileage, with a lot of crud built up in the fuel tank and lines. I would be shocked if it did NOT clog the injectors.

My bet is he'll have to clean the injectors two or three times, at least once "mechanic style" with the direct-connect kit, and then run several bottles of Techron (or equivalent fuel additive cleaner) and several tanks of gas through the fuel tank to get it all cleaned out.

You're welcome - and remember, you are diagnosing the problem first. Do NOT just start throwing replacement parts at it till it works, unless you get darned lucky that route can be hideously expensive.

Fuel filters and other cheap maintenance items are OK to change on a guess because they have to be done every so often anyway. But don't go buy a set of injectors or a new in-tank electric fuel pump on a guess. You can be out several grand real fast, and still have a dead car.

If you must spend money, get good tools. My opening list would be a fuel pressure test kit, flare wrenches to change the fuel filter, a creeper, a decent floor jack and jackstands to get under the car to the filters, etc. - put them away and they'll still be valuable the next time you have car troubles.

If it traces to crud in the injectors, you can buy the professional injector cleaning kit at a good auto parts store like NAPA. They have a little storage toolbox with the regulator, hoses and connectors needed for the fuel rail fittings on various car brands, instructions, and two or three cans of cleaner. Hook it all up and the car runs at idle on 100% injector cleaner, flushes the dirt right out.

You can pay a mechanic, and get it done once. Pay the same amount of money to buy the good cleaning tool kit, and you own it. From then on you only need to buy another can of cleaner and hook it up.

****** divider for emphasis ******

One other very important thing - GO BUY A PRO-DUTY FIRE EXTINGUISHER FOR THE CAR, AND A BIG ONE FOR YOUR GARAGE. NOW, before you go back to working on this car. And I'm not kidding around.

****** divider for emphasis ******

We are dealing with an iffy fuel system here - If the ethanol attacked the fuel hoses or rubber seals in the fuel system, you could end up with a fuel leak under 40 PSI plus pressure. And fuel leaks in the engine compartment can turn into an engine fire faster than you can cut the ignition - you want to save the car if you can, if you don't put it out fast it's scrapyard time...

You need a good metal head refillable extinguisher, the plastic head Kidde's that they sell at the hardware store for $12 are junk - if the plastic siphon tube inside breaks from rough handling you can't tell, until you go to use it on a fire and it does not work. And that's NOT the time to find out.

My suggestion is the Amerex B417 2-1/2# for in the car, and a B402 or B500 5# for the garage. They should run roughly $30 for the 2-1/2# and $40 for the 5#.

formatting link
Call your local Fire Department for a recommendation of the local FE shops that sell and service - they won't send you to a crook. They'll gladly show you how to use it, you'll probably get an invite to their next live-fire training session so you can practice with a real extinguisher and real (controlled) fire. (Pan with a quart of gas.)

-->--

Reply to
Bruce L. Bergman

You're welcome and good luck!

Reply to
Ray O

Reply to
gadgets via CarKB.com

What do yo umean by "won't even try to start?" I assume that the engine is cranking but will not catch.

I'd start by taking a look at the basics, air, fuel, and ignition source at the proper time.

By any chance, does the engine turn over faster than normal when engaging the starter? When was the timing belt changed last?

Reply to
Ray O

Reply to
gadgets via CarKB.com

Next time, stick to OEM plugs.

Check for a crack in the intake tube between the filter and throttle body, check the idle air control valve and MAF sensor.

Reply to
Ray O

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.