P0171 again!!

[DatSRBoi]

My guess is for now reset the battery and keep running on 4psi for now... Most likely the car was so use to 5.5 pressure that when you went back to lower safer PSI that its not senseing it and thinking that its looseing compression so the car goes wrong all over the place..

[DatSRBoi]

The saying always goes... Once you go black, you cant go back haha

[dominoSLEV6]

How much was your OBDII scanner? I'm rather unfamiliar with them as far as what they're really used for. Can't you tune with them as well?

Are they like the scangagues that can also read your performance like 1/4 mile times or are they strictly for measuring different things in your car, and pulling codes as well as tuning?

-chris

[ChargedSolara]

there are some obd2 scanners that can check the status of various things on the car.

my scanner is strictly for reading trouble codes, and clearing them out of the system. for me thats all i needed it for, and it was a good deal. regular price is 149.99. i got it for 99.99, not bad conisdering some people pay 80-90 bucks a scan at the dealership.

[StockSolara]

check and make sure that you have a suction coming from the front valve cover hose.. it should be a suction.. if its not then you have damaged internals and blowby

You're talking about the crank vent case hose right? I always thought it's suppose to shoot out hot air from the engine and some oil vapor goes with that is why people have oil catch cans w/ a breather.

[SC V6]

check and make sure that you have a suction coming from the front valve cover hose.. it should be a suction.. if its not then you have damaged internals and blowby

You're talking about the crank vent case hose right? I always thought it's suppose to shoot out hot air from the engine and some oil vapor goes with that is why people have oil catch cans w/ a breather.

the front hose should have a suction, and the rear valve cover w\ the PCV valve should push hot air out... this is what I remember when I had a lot of blow by.. I had a lot of oil in my intake from the front valve cover hose... I had a lot of blow by from repitive beating... and the front valve cover shot hot air out that was smokey and sometimes had some oil w\ fuel mix crap coming out... Im about 99% sure its bad if its pushing air out... On my car right now, after I had the engine rebuilt, I have only run 4psi and I still have suction coming off that front hose... If you are worried just get a leak down test done (compressio)

I don't want to cause anyone to get scared... its not a bid deal.. if you are worried get it checked out.. from what I remember having blow by is not a good thing w\ our motors if you have stock internals

[Fletch]

The hose from the front cam cover to the intake is a vent and there is supposed to be some oil residue. That's why most of our throttle bodies need to be cleaned out.

For those who think they may have a problem, keep an eye on oil consumption and the quality of the oil in the dipstick.

I know my engine is far from perfect. I burn about a quart every 3k miles (using 30 weight) and I think the oil has smelled a little like gas for a couple years now. So I definately have "some" blow by. However, the engine still has a lot of power and I had 180 psi on the front 3 cylinders after a compression test.

[SC V6]

anyone know what the compression should be w\ the engine not running and TDC? I though it was supposed to be like 210.. anyone know for sure?

[SC V6]

The hose from the front cam cover to the intake is a vent and there is supposed to be some oil residue. That's why most of our throttle bodies need to be cleaned out.

For those who think they may have a problem, keep an eye on oil consumption and the quality of the oil in the dipstick.

I know my engine is far from perfect. I burn about a quart every 3k miles (using 30 weight) and I think the oil has smelled a little like gas for a couple years now. So I definately have "some" blow by. However, the engine still has a lot of power and I had 180 psi on the front 3 cylinders after a compression test.

oil smelling like gas is a BAD thing... that means that you have gas mixing w\ the oil.. thats not a good thing at all..

When I needed my motor rebuilt I noticed a few things

1) i had massive amounts of blow by coming out the front intake hose as well as oil, and oil/gas mix that would froth up and become a fluffy looking foam that was oily as well as smelled like gas

2) From a dead cold start it would smoke at start up

3) had my compression checked and it was low, but not that low, and I have MASSIVE blow by

I still have that motor in my garage.. I could get pics of what the cylinder walls looked like from the broken piston lands...

Overall.. oil smelling like gas, and blow by are signs of damage...

Personally.. i think that our motor can't handle 5.5 psi, which is why after I had the motor rebuilt I haven't moved past stock 4psi...

just my .02

[Fletch]

I agree to an extent, but it is possible to have some blow-by without having broken piston lands. Would I like to have a new/rebuilt engine, sure, but I'm not going to spend the money while it still runs okay.

I'll leave it with that, as we are sort of getting off topic.

[StockSolara]

anyone know what the compression should be w\ the engine not running and TDC? I though it was supposed to be like 210.. anyone know for sure?

According to my Toyota Solara Repair Manual. . . It says the compression should be at 220 psi and lowest 145 psi. . . each piston shouldn't be more than 15 psi different from each other

[ChargedSolara]

next stop..leakdown test..i wonder how long the car will run with "blow-by" anyways..

[StockSolara]

Hey Derek did you ever get a compression test? I think I need one too. . . I have blow-by

[DatSRBoi]

Something tells me ALl solara owners are experiencing some trouble lately.. From S/C dieing to engine failures to CEL to malfunction... Only people Im not seeing issue are fully stock owners...

[StockSolara]

Something tells me ALl solara owners are experiencing some trouble lately.. From S/C dieing to engine failures to CEL to malfunction... Only people Im not seeing issue are fully stock owners...

its because we abuse our engines