This is the exact problem I'm having. But I haven't checked compression. So I'm going to try to switch injectors to see if that changes anything.

Link

 

So, I changed my injector and the problem stayed in cylinder #1. Can anyone confirm that I'll need a new ecu before I go out and buy one.

 

u dont need a computer. its a misfire on cyl #1... are u sure its ignition? have u checked for spark? if its happening only to one cyl its not ur coil, otherwise it would be to all cyl's random misfire.

 

u dont need a computer. its a misfire on cyl #1... are u sure its ignition? have u checked for spark? if its happening only to one cyl its not ur coil, otherwise it would be to all cyl's random misfire.

I'm getting spark in all of my cylinders and fuel, but nothing is happening in cylinder#1...

 

If I need a new ecu I think I'm going to go OBDI and have it tuned... but I need to know if I need a new ecu or not.

 

Sure you have the spark plug wires all plugged into the right places on the dizzy?

If you have fuel and spark, I'm guessing that's what the problem is, if your car is running crappy.

 

Sure you have the spark plug wires all plugged into the right places on the dizzy?

yeah, I've checked that a few times. But if I had them plugged in wrong wouldn't I get more than one cylinder with an issue? I just don't know what else to do to fix this problem.

 

well I have someone coming over to pull codes for me this weekend and hopefully convert to obdI for a tune

 

You sure its not cylinder 4? Which one is it? By the cam gears or by the distributor? Cylinder 1 is by the cam gears and cylinder 4 is by the distributor.

 

You sure its not cylinder 4? Which one is it? By the cam gears or by the distributor? Cylinder 1 is by the cam gears and cylinder 4 is by the distributor.

Yes it's number one (by the cam gears). I just can't figure this out. I mean I'm getting spark and fuel but no action in number one.

 

if you ECU is fried nuthin would work, you dont need a computer

 

if you ECU is fried nuthin would work, you dont need a computer

But thats the thing. In the link that I posted in my second post someone was saying something about an injector sending unit in the ecu. I'm not sure if this exists, but when I switched my injectors the problem stayed in the same cylinder. I was still getting fuel and spark but absolutely nothing in cylinder #1. I just don't get it. I know that if my whole ecu were fried nothing would work, but there are components in an ecu that can break without the others breaking. I appreciate everyone's replies but no one is reading the link that I posted. I know there are some people on here that are having, or had, this problem. I also know that there are some people on here that can answer my question more than just asking me if I'm sure it's in cylinder1. I've tried everything I can think of here. I'd really appreciate someones knowledge with this situation.

 

how bad is the car running ? are you getting a constant noticeable miss ? or is is just once in a while , do a compression test . chances are you have a dead cylnder. if thats the case , then it could be pistion rings or valves if it burned one.

 

^^^I wish I could read what that says... it's awaiting approval

 

I highly doubt your ECU has gone bad, that just doesn't happen in Hondas. Although all their tests say if that nothing else works, replace ECU.

Try moving things around, like spark plugs or even wires, but make sure they go to the correct cylinders.

 

check compression first, make sure you have spark by just grounding the plug on you block and looking for it. those are my only 2 ideas to tell you whats wrong

 

check compression first, make sure you have spark by just grounding the plug on you block and looking for it. those are my only 2 ideas to tell you whats wrong

I've checked spark by doing that, compression is the only thing I'm waiting on testing.

 

how bad is the car running ? are you getting a constant noticeable miss ? or is is just once in a while , do a compression test . chances are you have a dead cylnder. if thats the case , then it could be pistion rings or valves if it burned one.

I'm waiting on a buddy to come over with a compression tester to check compression. I'm hoping it's not that, but I did have low compression in that cylinder before I did my timing belt. Which was done the same time I did my plugs, wires, rotor and cap.

 

Quote: ferrariboy1989 on Oct/12/07
check compression first, make sure you have spark by just grounding the plug on you block and looking for it. those are my only 2 ideas to tell you whats wrong


I've checked spark by doing that, compression is the only thing I'm waiting on testing.

Testing for spark that way has been known to kill the coil and ICM in the dizzy. Just a thought.

 

Quote: 00geezer00 on Oct/12/07 Quote: ferrariboy1989 on Oct/12/07 check compression first, make sure you have spark by just grounding the plug on you block and looking for it. those are my only 2 ideas to tell you whats wrong


I've checked spark by doing that, compression is the only thing I'm waiting on testing.



Testing for spark that way has been known to kill the coil and ICM in the dizzy. Just a thought.

But if I had a dead coil, wouldn't all of my cylinders be misfiring, or not firing at all?

 

I'll know tomorrow morning a little more about the car...

 

so I found out I've got a bent valve in my number one cylinder. I'm looking around for parts right now. If anyone has anywhere I should check out for parts that would help... I've already checked all the sponsors. Also what would be the advantage of high compression valves?

 

i knew it !!!!.....lol glad to hear you found out the trouble man. im curious how it bent 1 valve though , you would think they would of all been bent if 1 managed to get bent. i would imagine the high compression valves would hold up to higher temps and be forged from higher strength metals. dont take my word for it. but i would suspect they are ment for turbo charged engines. thought you could use them if your running N/A

 

i knew it !!!!.....lol glad to hear you found out the trouble man. im curious how it bent 1 valve though , you would think they would of all been bent if 1 managed to get bent.i would imagine the high compression valves would hold up to higher temps and be forged from higher strength metals. dont take my word for it. but i would suspect they are ment for turbo charged engines. thought you could use them if your running N/A

I figured I would have some sort of compression problem after doing a bit more research. I'm still confused as to how I bent a vavle though. I know I had low compression a while ago when I tested it but I was getting zero compression in cylinder #1. Now I'm tempted to do my rings while my motor is apart, just in case. Either way I need to start pricing parts to order. I guess this will be my birthday present to myself, because my birthday is in two weeks.

 

My teardown begins tomorrow, right after I get out of class and apply for my third job.

Then, the build process will start. I'm going to get flat faced high compression valves, I'm going to have the head milled a little to raise compression, Port and polish, arp head studs, re-ring my stock pistons (and clean the tops while they are out), then I'll be getting my obdII-obdI conversion... I'm getting a little excited. I'm shooting for 190whp... The only thing I'm not excited about is not having a car, and having to ride my mountain bike to work lol...