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Showing results for tags 'misfiring'.
Found 6 results
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Yo! so yesterday my s2 R33 rb25det was working perfect never had an issue. i get in my car i go for a drive i go to hit boost and its struggling, it sounds like i have a bee r limiter but no power at all just making mad pops from the exhaust. the factory boost gauge shows its working but yeah no power and it struggles real bad. i have checked all the piping and lines. no leaks or splits. if anyone has gone through this or knows how to fix it please help. i just wannnaaaaa hit boost
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Here's the story. So I had this really weird problem happen yesterday. Driving to work in the afternoon and just cruising along and suddenly the car starts to have a really odd cruising note. Sounds almost wrx like, but really faint. Car is fairly temperamental so don't think much of it, vary the throttle a bit and it goes away but then comes back a few seconds later. Get closer to work and now it really sounds like a boxer. Not only that, now I can see white smoke in the rear vision mirror and car is popping a fair bit. Almost at work and it bangs a couple times out the exhaust . I'm talking proper Bee-R loud here (tune is a bit rich I think as it pop and flames from time to time in usual driving). Park up and leave the car idling. I can see a little white smoke from the exhaust and it sounds rexy like, but I can't see anything wrong in the engine bay. Ok so start the car to leave work this very early morning and car is fine. Nothing wrong at all. No smoke, No being a fake impreza. Back to normal. Drive for around 30 mins with a couple full boost pulls to make sure everything is fine, nothing seems wrong. Right after this I am about 10 mins from home and the wrx noise comes back really bad... Leaving a set of lights like a granny, hit 4th gear and loudest bang I've ever heard from the exhaust and see the brightest flame I've ever seen the car do out the corner of my eye reflecting off the night bushes. I can see more white smoke coming out the back than earlier. Stop at the last set of lights before my house to turn onto the highway and there is white smoke billowing out the exhaust, I turn the car off while I wait at the lights as it is way too much. I'm thinking oil smoke, but I can smell fuel really bad while I sit and wait for the lights. The light changes, I start the car and take off quickly. I can see a solid cloud of smoke where my car was as I leave the lights. It only smokes a little as I drive off though. Getting onto the highway I hit a bit of boost and the misfiring goes away? What?! I change gear and boost higher and, sure enough, the misfiring is gone while in high revs and boost. I get home, park up really quick and it's smoking like at the lights so I turn it off quickly. I get out to look at the muffler and there is smoke still wafting out, but it looks really weird and I can smell fuel. I let the car cool down to see if the problem goes away again, but no go this time. I took some vid: Idling Video1 Reving. I felt and smelt the stuff on the ground and it is definitely fuel, not coolant or oil and it's clear. Video2 Engine off. Video3 This is the closest thread I can find to the same issue after searching for a while http://www.skylinesa...-of-this-before I think maybe an injector is stuck open, which is maybe why it stops misfiring while on high revs and boost? That one is really confusing. AFM voltage is in spec on the Power FC controller. I've never seen an issue like this before. I don't get why it smokes white? A little bit unusual as over fueling is usually black smoke? I guess there is that much fuel it's more like vapourising than burning. Car is an R32 RB25DET stock internals, HKS GT-RS kit, FMIC, Nismo 700cc injectors, Z32 AFM, Brand new Nissan coil packs about 6 months ago, Power FC (possibly a pro version as when I hit limiter it's like a Bee-R) Hopefully someone has some insight on this.
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hey im hoping somone on here can help me. I have a rb20det i have had sitting for a year or so now ive finally decided to get it going. It is hard to start sounds like it wants to fire but wont and when it does it just coughs and splutters . the only way to rev it is tapping the accelerator on and off lightly or it will backfire and die. When trying to rev it studders and has crazy backfires it alsowont rev higher than 2500 if you can manage to get it that farwhich i think is limp mode. I beleive its running rich as it fouls the injectors and blows black smoke can anyone help or have any ideas cheers
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Misfiring help I need help. I have a 1991 Nissan Skyline R32 GTR, I recently had it in the shop getting intercooler piping, new ECU HKS Fcon V pro and a tune. Got 579 to the wheels and was running great for about a week. Then one morning woke up and it sounded like a Subaru and it blows smoke out the exhaust. Did some trouble shooting and found that when I unplugged number 2 and 4 coil pack the engine idle didn't change. red out the coil packs and checked the plugs, all good. even swapped coils around with no change. The plugs are wet with gas so I did a old school spark test in the block and getting spark. ordered new coil pack wire harness and still no change. swapped out the PTU(coil ignitor unit) with a known good one and still no change. Did the self diagnosis and got code 21, Could it be the tune is causing this, I mean it just started one morning when I started the car and it ran fine the night before. Thanks. Mods on the car 1.2mm aluminum head gasket tomei pons cams tomei m8270 turbos HKS intercooler piping HKS boost controller HKS Fcon pro v(no MAF's) nismo 600cc injectors walbro fuel pump full 3in exhaust w/cat delete
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Hi guys, I have a series 1 r33 running spitfire coils, 1250cc injectors, walbro 460 fuel pump, gtx3076r and an Apexi fc. The car DOESNT struggle on start up/Idle, but splutters and struggles to accelerate. After 15mins or so of driving, the car suddenly runs as normal and runs like a champ. The problem all started within one day- I drove the car in the morning and it ran fine and then came back to it 2 hours after of parking and the problem started. Hasn't gotten worse or any better. I have checked the spark plugs, they all look fine. Is it a coilpack problem? Ecu problem? Sensor problem? As it runs like shit until normal engine temp. Thanks a a million guys, Any help is much appreciated. -
Hey all I can't take it anymore with the issue and its time for DIY and learn and save $$$. I drive a r34 4door rb25de neo manual Firstly i would like to say last year before the end of November i bought new spark plugs and had them replaced because the rocket cover gasket needed to be replace so might as well change of the spark plugs as well. With this change the car has been running perfectly without a beat until last week. I have been noticing the car was causing some issues after roughly 10-15minutes of driving from cold start, it was coughing and losing power, it took a bit to notice but then become a lot more noticeable during cold starts and honestly felt like it was misfiring. After some time driving and the tempt reaches normal the engine runs smoothly and no misfire at all. So here it is, I would like to know how can i go on and diagnose the problem and try and fix it, without having the diagnostic tools and electronics. From reading through different posts, the most common places to check are the spark plugs and the coil packs, that is all i know. I do not own a lot of tools as well if it comes down to having something really specific to fix it. (I do have a torque wrench lol)
