So I put all of my problems into one thread...

[RB280SX]

Well, after coming home yesturday from school I frantically did some work on my car. I noted the problems and now the only thing that I can do is wait for someone to help me out .

1. Car won't rev past 3.5k (begins to sputter around that rpm).2. Car won't start again if you rev to 3.5k unless you give it a nights rest.3. Idle won't go down, even though I screwed the IACV as far as it will go (clockwise).4. Car runs richer than Bill Gates, causing it to puff black smoke when giving it gas.5. Radiator fluid is leaking from somewhere (near top of the radiator, it is spilling onto the coresupport), however, the radiator itself is not wet?6. Car won't start anymore (occured possibly because I did WOT).7. Spark plugs are alittle wet at the tips.

That's it for now . Please help. Thanks.
Modified by RB280SX at 12:28 PM 5/28/2006

[Yellow4g63]

Well, after coming home yesturday from school I frantically did some work on my car. I noted the problems and now the only thing that I can do is wait for someone to help me out .

1. Car won't rev past 3.5k (begins to sputter around that rpm).2. Car won't start again if you rev to 3.5k unless you give it a nights rest.3. Idle won't go down, even though I screwed the IACV as far as it will go (clockwise).4. Car runs richer than Bill Gates, causing it to puff black smoke when giving it gas.5. Radiator fluid is leaking from somewhere (near top of the radiator, it is spilling onto the coresupport), however, the radiator itself is not wet?

That's it for now . Please help. Thanks.

#1 your MAF is bad or the wiring is wrong.#3 check the Throttle body to make sure that it's not missing a screw in the butterfly (Had that problem with my SR20VE), Could be that your missing a vacume hose for the Idle air or something.#4 prob cause of the maf problem and Intercooler pipe leaking could also cause #1.#5 check your house clamp? might have dug deep into the house and cut it.

Build a psi tester and test your system to check to see if your intercooler piping has any leaks in it. Will save you so much time, and get a multi meter and check your maf wires to see if there right. 12v on one and 0-5v on one. 0-5v is going to be your signal wire, 12V is going to be the power and the others are grounds. Start slow and take your time and it will come to you. Could be a bad ECU too.

[rb20detsilvia]

i agree with what was said also check the cap it could be leaking sound s like bad maf as far as the reving mine does that somtimes but mine is the plug if i wiggle the plug it wil stop for a while

[Darius]

+1 for the maf issue. Troubleshoot it according to the FSM to make sure everything is in order and go from there, but I would start there first.

[RB280SX]

Just checked it and the voltages are fine. I also disconnected the plug and the car started (yesturday). I also cleaned it out.

I did pull the spark plugs out again and they are filled with carbon AND fuel... FU#K! I'm guessing that the piston rings are gone, hence no compression, leading the car not to start. I found fuel on 3 or 4 plugs. Anyone know where to purchase piston rings for the RB?

[eh?]

Just checked it and the voltages are fine. I also disconnected the plug and the car started (yesturday). I also cleaned it out.

I did pull the spark plugs out again and they are filled with carbon AND fuel... FU#K! I'm guessing that the piston rings are gone, hence no compression, leading the car not to start. I found fuel on 3 or 4 plugs. Anyone know where to purchase piston rings for the RB?

Forget the rings. If those two cylinders weren't igniting it would have obvious.You have maf problem. RPM cut = maf Running rich = maf - ecu running off preprogrammed map.No start = maf - You could have listened to me in the other thread and we could have figured this out a long time ago :p

Exactly what voltage is your maf reading? Did you jiggle the wires to see if you have a bad splice somewhere?

[wawazat8402]

its also good to check the voltages at the maf as well as at the ecu to make sure you dont have interference somewhere along the signal wire.

[RB280SX]

But the car ran without the MAF hooked up... Also, there are 5 pins on the MAFS and when I put the voltmeter up to some of the pins, I was getting 5.7x and 12.xx and 15.xx readings. Which pins should I check? Also, how do I get a reading from the MAFS sensor plugin on the wireharness?

How do I unflood my engine? Can someone also elaborate as to why there is fuel on the plugs when there shouldn't be?? (I may be completely wrong on this...). Thanks ALOT!
Modified by RB280SX at 12:35 PM 5/28/2006

[240dreams]

You are most likely flooding your engine because of a MAF related issue - as already mentioned. Fix your MAF and your flooding issue will probably magically disappear. To "unflood" your engine, disconnect the fuel pump fuse and crank the motor a few times. This should expel the remain fuel in the combustion chambers. Your plugs are wet because of the excess amounts of fuel not being burnt. You shoud take them all out and clean them up before trying to start it each time you flood your motor.

[eh?]

Yes, the car will run with the MAF unhooked. And it will have a RPM cut too, that's how you know there's MAF problem. Samething when it wouldn't start, just unplug the maf and it will start. It's almost always a MAF issue with this swap because the maf harness needs to be lengthened and there's always the possibility if a bad splice.

Check the RB20 wire diagrams and FSM , you are looking for the MAF signal wire. irc, the voltage should be less than 1v with the car running. Check the voltage at the ECU pin.

But the car ran without the MAF hooked up... Also, there are 5 pins on the MAFS and when I put the voltmeter up to some of the pins, I was getting 5.7x and 12.xx and 15.xx readings. Which pins should I check? Also, how do I get a reading from the MAFS sensor plugin on the wireharness?

How do I unflood my engine? Can someone also elaborate as to why there is fuel on the plugs when there shouldn't be?? (I may be completely wrong on this...). Thanks ALOT!

Modified by RB280SX at 12:35 PM 5/28/2006

[RB280SX]

Damn..., another 150$ . Oh well, I'll make sure to take my friend's and give it a try before I go out and buy one. I'm goig to replace the fuel pump, fuel filter, and MAF and then I'll let you guys know.

Btw, I thought that if the motor floods at all, that it must be either the gasket or the piston rings ??.

[FattyMcBaggins]

Flooding just means that there is excess fuel being put into the combustion chamber that is not being burned. With the MAF being messed up, the ECU is not getting any information to say how much air is flowing in, so it doesn't know how much fuel to put in. It compensates by switching to a preprogrammed fuel/ignition map that pumps in ALOT of fuel. Has nothing to do with your seals

[240dreams]

If you are experiencing lots of flooding, I'd change the oil before driving the car. Take out your dipstick and I bet you'll smell fuel. Fuel probably washed through the rings into your oil saturating it. Be careful!

[eh?]

Check the wiring before you replace anything..

[RB280SX]

I have checked the wiring and all is well. I'm going to borrow a MAFS and replace the fuel stuff and purchase a new ECT sensor.