Ok so I posted before about my engine rotating backwards after the engine warms up, and so I replaced all my injectors with 290cc injectors, new Gsr OEM fuel rail, fuel filter, header(old one was bent to sh**) and I was doing a compression test and cyl. 1&2 were at 160 psi and cyl. 3&4 are 170 psi. So I also hooked up my air compressor to each cylinder after the test and checked for leaks in the head/intake and exhaust valves. After my testingi checked my timing and distributor and everything is tip top shape and the motor still runs backwards after its warm! My next option is an ecu, any help or suggestions would be awesome!

 

Also before the engine runs backwards the car stalls!!

 

lol runs backwards it's not possible in the sense you're thinking .....check mechanical timing 160-170 is ok low but still ok.


Most all engines in cars spin clockwise when viewing the front of the engine (pulley/accessory end), and counter-clockwise when viewing the rear of the engine (transmission end).

Pre-2000 Honda engines are one of the oddballs in the engine world, spinning CCW when looking at the front, CW when looking at the rear. Since 2000, the K-series engine started going into several Honda models, which rotates clockwise like most engines

 

Lol how you know its backwards??

 

OP, you need to stop huffing your exhaust fumes.

 

Ok the motor runs clockwise then when it warms up the car will stall and the motor will spin backwards and I know because one day i was in 1st gear it stalled and the car actually pushed back. Lol I havent huffed fumes in a while bro haha jk

 

Seriously. Stop huffing exhaust gasses. A motor doesn't work that way. It won't just magically start spinning backwards. The starter only spins one direction. The valvetrain only lets a motor operate one way. What you're claiming just doesn't happen.

 

THIS HAS TO BE A TROLL POST did you have the ebrake on was the car on an incline....so many things that could do that, yes even stalling. again it's NOT POSSIBLE FOR IT TO SPIN BACKWARDS.

 

Video or gtfo

 

Wow really I'm not ******* stupid or retarded or huffing or smoking or snorting ****. Let me say this again. MY HOMDA CIVIC 4 DOOR WITH A GSR SWAP WILL WARM UP JUST FINE AND WHEN I TAP ON THE THROTTLE JUST A LITTLE BIT THE CAR WILL STALL AND THEN THE MOTOR WILL START SPINNING THE OPPOSITE DIRECTION (intake mani becomes exhaust and exhaust Mani becomes intake) THE CAR WONT RUN THAT WAY IT WILL SPIN FOR ROUGHLY 2-3 SECONDS AND DIE, I will post a video as soon as I possibly can and prove to basically the Honda world it does in fact happen, my dad a professional licenced mechanic has never seen it before either, or my buddy who is also a mechanic that specializes in Hondas, I can't post a video right away because the car is at my dads shop, probably on Sunday I'll post it so stick around fellas, and if I post the bid and nobody can help me pinpoint it? Then I will keep you all posted on how I (maybe) fixed it.

 

Its not a troll post and I know what I'm talking about, the car will be on perfectly level ground and I'll start it and warms up just fine and will drive fine warming up and I found out that at was spinning backwards because I was in first gear on level ground and when it was warmed up I put it in 1st gear tapped the throttle and it stalled I put it in 1st let go of the clutch( right before it stalled) and the car moved like 3 ft in reverse, keep in mind my car was in 1st gear as this happened.

 

Let me explain something to you. I'll keep it short and sweet. First off, the starter only spins one direction - it can't start spinning the wrong direction. Second off, the valvetrain doesn't work that way. Your intake and exhaust can't magically switch roles.

Period. These aren't soft concepts, they're hard science. Unless your car is going 180* out of time when it warms up (absolutely, completely and totally physically impossible), and unless your starter just decided to spin backwards when warm (starters don't have a thought process, they don't work that way), your car isn't trying to spin backwards.

 

OK maybe I need to be more clear with you, the car starts like a regular Honda and the engine will run like any other engine, BUT when the car warms up (still running normally) I tap on the throttle, car will stall and the engine will spin backwards as soon as it stalls.

 

That isn't "spinning backwards", that's called conservation of energy. One of Newton's laws. The engine stalls and stops. It isn't actually spinning backwards - there are no rotations being completed. You need to stop thinking about the whole "backwards" thing (that you're imagining, by the way), and figure out why the motor is stalling out when warmed up.

 

I wanted to contribute to the forum for the advice I had recently gotten, but Jesus tapdancing Christ. This is retarded. I was going to go into a detailed explanation as to why and exactly how you're a tard, but you clearly have no grasp of how an internal combustion engine operates, or a transmission for that matter. Time not wasted.

 

I've given up on OP

 

OP...check that your spark plug wires are in the correct orientation. Make sure the MAP and TPS plugs are not crossed. Make sure cam timing is dead on.

I think what the OP is saying is that when he gives it gas, it misfires and dies.

 

To spin backwards, the engine would have to first completely stop. That is the only way anything can change direction. So your motor doesn't spin backwards without first stopping...which would be extremely violent.

I doubt it's spinning backwards. What probably happens is that it slows down and tricks your eyes. Ever watched a wheel spinning? At certain points, it looks to be going backwards.

Anyway, check the things I said to check. Either your timing is off or you switched the plugs on one of your sensors with the other. TPS and MAP are common. CTS and VTEC is the other common one.

I'm sure the car is throwing codes. What is the check engine light on for?

 

Also check for moisture in your distrubutor cap. Something is causing it to stall and maybe fire the wrong cylinder at the wrong time during/after the stall.

 

OK if your so smart then once I post my video on Sunday you can come to WA and pay to fix my car k? And I will just say that the starter spins fine, the timing is perfect, distributor is brand new, and I'll repeat myself OK, THE STARTER SPINS FINE AND THE CAR RUNS JUST FONE WHEN WARMED UP AND WILL STALL WHEN I TAP ON THE THROTTLE, when the motor stops, right away the motor spins backwards. And don't tell me its not possible when I see it in front of my face and I know what I'm talking about.

 

I checked the codes and all it tells me is o2 sensor out and VSS (speedo is out)

 

And I will watch the car from the engine bay and tap the throttle and I will physically see the motor stall and start rotating the opposite direction. Honestly everyone if I could physically show you guys here on HT none of you will doubt my credibility. Also if I heard someone talking about this id be saying the same thing you guys are, its not possible but its happening to me and I never would believe it if I didn't see it for myself.

 

Bro okay I've been working on Hondas and engines for 8 years and I know exactly what I'm talking about. But thanks for not contributing

 

Ok man, when exactly will you post the video? Its clear peopl dont believe you, which is understandable.

 

How about the woodruff key in the crankshaft pulley is worn or broken and what you see is the pulley flopping loose and free wheeling for a split second when the engine quits.