Engine help needed!

Post by **Tictakman** » Wed Nov 19, 2003 9:12 pm

Lemme first give you the background of what all i had done this summer.

t3 turbo35 mm tial wastegate running an 8lb springsilvia injectorsno name BOVSAFC After everything was on and safc was tuned to -27 across the board i started her up. everything was fine, idle was great.

took it on the street and drove slowly done, fine.

then i gave more than 3/4 throttle(not full boost even) and the car cut out.

i tried to restart the car and nothing, it would just turn over.

did a compression test and all were below 100. so i thought headgasket. tore the engine apart and the gasket looked fine but i replaced it anyway. After i did the headgasket i also redid all the timing just to make sure.

put the engine back together, stock. not running any aftermarket stuff. but it still wont turn over. i rechecked the compression and it is still below 100.

now before i tore apart the engine for the first time i noticed a ton of fuel in the cylinders when i pulled the plugs.

now the first time i tried to turn it over after i rebuilt the engine it sounded like it wanted to but then it just went back to the same ole sound. after that i pulled the plugs and again there was tons of fuel in there. if i rock the car i can see it sloshing around(just to let you know how much is in there).

ive talked to numerous people and some think that the fuel is getting on the sides of the pistons and taking away all the compression. now if this is true would you think that my ecu is messed up and sending too much fuel still?

ive also been told that it could ahve been my air/fuel gauge. i spliced into the stock wire(green). someone said if you lessen the signal to the ecu then it will add more fuel to compensate. is that true?

oh ya i forgot to add that my car is a 95 with only 33,000 miles on the KA. i wanna keep my engine and rebuild it if the problem isnt electrical

does anyone have an idea what it could be?

ive posted this post one other place to get a consensus on the problem.

thanksZak

Post by **Dragon240** » Wed Nov 19, 2003 9:12 pm

try another ecu to find out if the ecu is hosed...

Post by **Tictakman** » Wed Nov 19, 2003 9:12 pm

ill try that. what could have happened to the one i have now?

also do u think it could be the MAF sensor?

Post by **andrave** » Wed Nov 19, 2003 9:12 pm

I meant to find this myself, but oh well.anyway, someone had this exact same problem, car not running well, cylinder filling with fuel...it was either here or on zilvia.try searching for it, I mean it was the exact same stuff..

Post by **Tictakman** » Wed Nov 19, 2003 9:12 pm

ill try to search around Andrave.. any ideas what to search for?

im using a SAFC II for the injectors...when the engine was running both with and without the safc the a/f gauge was bouncing back and forth fine. if anything when i had the turbo on it was more to the rich side.

ive checked that i was getting spark and i am, the spark plugs im guessing have the same mileage as the engine does. i bought new ones when the engine died to see if that was the prob but no luck there.

yes the plugs were wet with gas the color looked like a light brown if i can rem right.

as for the fuel pump ive not checked that. how do i go about that?

when i was putting the engine back together i checked the piston rings by putting antifreeze on the top of the piston and tried to move it around to see if any went down the cylinder wall but none bled out. needless to say i didnt change the rings.

ive changed back to my old injectors so im not using the nismo ones.

also do you think it could be the ecu that i messed up or maybe the MAF? MAF-maybe it thinks there is a lot of air still going in and trying to compensate with lots of fuel?

when i go home next week ill try everything that you guys have suggested.

Does anyone live in cincinnati that might want to take a look and see if they know what happened?

Zak

Post by **95_240sx** » Wed Nov 19, 2003 9:12 pm

I dont think that fuel in the cylinders would lessen the compression. However, fuel in the cylinders can get the engine hydrolocks, as in, you have liquid in the cylinders and make a assload of compression and boom, you blow some rings out. They way id check for the problem is first with a leakdown gauge, then depending on what it tells you, you can then pull your head, roll the engine over until each cylinder is on TDC and check with a feeler gauge between the rings and cylinder walls. Just an idea, but it doesnt sound like your in a good position.

Rick

Post by **Tictakman** » Wed Nov 19, 2003 9:12 pm

ya i know im hoping for the best.

a mechanic told me about the fuel thing. if there is lots of fuel then it can leak down the walls and lessen the compression. not sure if its true but im gonna try a few different things when im home next week.

worst case senario i think ill get another ka w 80,000 or around that. turbo that next summer. and rebuild this 30,000 one.

Zak

Website · Post by **s13sr20chris** » Wed Nov 19, 2003 9:12 pm

yup, its called being flooded. i see cars all the time with no compression that are just flooded. to much fuel can possibly wash out the cyl walls and kill your compression. if its just sorta flooded then pull the fuel pump fuse, hold the gas wide open, and crank. once it clears out slam the fuse back in. if you dont believe that fuel can wash out cyl walls, just spray a bunch of gas or carb cleaner down the spark plug holes(plugs out) of any engine. put the plugs back in and try to start. it will make the same high pitched sound and crank easier than usual due to low compression. if you have safc2, just lean it out and see if you can keep it running. of course you will have to clear the flood first. 2nd gen rx7s have a big problem with flooding as the injectors are prone to leakage. at least 4 altimas come in to my shop every month with no start due to flooding. just as an aside, did you know that when a fuel pump goes out sometimes it will wash out the cyls with the last bit of fuel? that can make diagnosing a fuel pump kinda tricky if you are not used to it.

Post by **Tictakman** » Wed Nov 19, 2003 9:12 pm

so i might be in need of a fuel pump? where is that fuse that your talking about?

is there any way of testing that or do i just have to replace it?

Zak

Website · Post by **s13sr20chris** » Wed Nov 19, 2003 9:12 pm

its not likely the fuel pump; i was just using that as an example. the fuel pump fuse is in the underdash fuse box i believe. there is also a fuel pump relay that you can pull if its easier. you need to dry out the cyls before you do any other testing.

Post by **Structure240sx** » Wed Nov 19, 2003 9:12 pm

my engine started to fill with fuel when i dropped my new one it. it get it out pull the fuel pump fuse, looks ont he fuse panel cover by ur left foot when sitting down, unplug distriutor plugs or take out spark plugs or jsut wires so long as u dont have spark. then crank it over some with the ignition

Post by **Tictakman** » Wed Nov 19, 2003 9:12 pm

sounds good ill give it a try when i get back. it should be nice and dry in there bc its been sitting in my garage for about a month back home.

since its been sitting should i just try starting itwhen i get back bc there wont be any fuel in there?

or should i do something else first?

Zak

Website · Post by **s13sr20chris** » Wed Nov 19, 2003 9:12 pm

yeah, you still need to clear it out. it wont dry out just sitting.

Post by **Structure240sx** » Wed Nov 19, 2003 9:12 pm

hes right and it only takes a couple mintues to do everything.

Post by **andrave** » Wed Nov 19, 2003 9:12 pm

structure was that you that was complaining of the cylinders filling with fuel earlier?

Post by **Structure240sx** » Wed Nov 19, 2003 9:12 pm

if by earlier u mean a couple weeks ago then yea

Post by **PMan_S13** » Wed Nov 19, 2003 9:12 pm

I am about 95% sure what your problem is.. your injectors are leaking out the inner seals. Try taking off your fuel rail and then turn the key so the fuel pump turns on.. I bet fuel will just pour out your injectors.

BTW, fuel in your cylinders will take away your oil coating on the cylinder walls which will make your compression lower than it should be.

I know this because this has already happened to me once =)

Good luck buddy

Post by **Structure240sx** » Wed Nov 19, 2003 9:12 pm

PMan_S13 wrote:
BTW, fuel in your cylinders will take away your oil coating on the cylinder walls which will make your compression lower than it should be.

I know this because this has already happened to me once =)

Good luck buddy

good point i didnt even think of that. i was able to understand why fuel would lower compression. now i remember that i used gasoline to clean my oil pan before i tapped it

Post by **andrave** » Wed Nov 19, 2003 9:12 pm

I know a guy that did that...used gasoline (a highly flammable solvent) to clean an engine part he was drilling (which causes heat and sparks).yeah, that didn't go so well for him.

lol... be careful.

Post by **jacob360** » Wed Nov 19, 2003 9:12 pm

Change your oil before you try to start the engine. With all that fuel sitting in it for so long, its going to be like water.

Post by **Structure240sx** » Wed Nov 19, 2003 9:12 pm

andrave wrote:I know a guy that did that...used gasoline (a highly flammable solvent) to clean an engine part he was drilling (which causes heat and sparks).yeah, that didn't go so well for him.

lol... be careful.

that would have been bad but after the gasoline i hosed it off real good then used an air compressor to blow it dry

Engine help needed!

Engine help needed!

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