Jump to content
SAU Community

Recommended Posts

any ideas as to why my car would be hesitating? it happens about when the car is above 4000rpm when your foot is planted. thanks guys. its an rb25det engine

Span

go with the standard plugs first,skylines like to do this when you dont f*k off the factory boost control,computer sees extra air then says you need more fuel so you get too much and it flat spots,0.8mm gap plugs usually fixes it.start with plugs if that dont work work ur way back form there,ie nxt step coils...still check out the ecu option,it can fix a lot at once

go with the standard plugs first,skylines like to do this when you dont f*k off the factory boost control,computer sees extra air then says you need more fuel so you get too much and it flat spots,0.8mm gap plugs usually fixes it.start with plugs if that dont work work ur way back form there,ie nxt step coils...still check out the ecu option,it can fix a lot at once

ive actually got an after market boost controller on there mate. not sure if that makes a diff.

Is it misfiring or just a bit of a hesitation?

I had a bit of a hesitation that was fixed by fiddling with my ebc settings. Dropped the setting that it uses to hold the gate shut down by 0.2psi and the hesitation went away and is now smooth as. Basically it was bringing on boost too hard and going past the SET value momentarily.

ive actually got an after market boost controller on there mate. not sure if that makes a diff.

do you still run a standard ecu?if so the extra airflow from the higher boost could be upsetting the ecu and messing with the mixtures,hesitation/flat spot because the ecu is pushin a bit too much fuel in for the extra air, its just one of many possibilities,most of them are mentioned in the thred anyway,i just thought id add that,simple test,turn boost back to stock then see if it still hesitates,if it does then im wrong on that part...

i had the same problem with my r34, it turned out to be the coils in my case. the spark from the standard coils isn't strong enough and when it comes onto high boost it simply blows the spark out. but are you running a high/low boost set up or just straight out 10psi?

i had the same problem with my r34, it turned out to be the coils in my case. the spark from the standard coils isn't strong enough and when it comes onto high boost it simply blows the spark out. but are you running a high/low boost set up or just straight out 10psi?

just straight out 10psi i will wind boost down tonight and see if it makes a diff.

Pull out your coil packs........ Its easy to do.

Undo the 8 screws that hold the plastic cover on, at the top of the engine.

Take the wired off the coil packs........ 6 of.

pull the coil packs out, and check them very carefully for cracks. I did this, and found NO cracks. I covered the underside of the coil packs with high temp (shellys roof and gutter) silicone.

Checked and re gaped plugs to .8, now the problem is no more, im running .9 of a bar too. Only mods are pod, cooler, full exhaust and pump .........

Edited by 1SLP80

good news guys. hesitation stopped when i wound boost back. i just put it as stock again as i am selling it. running a lot happier now. took it through the revs and no problems what so ever. thanks for the help guyz

Dan

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • You're not the first person that's said that about this car lol. A Touring wagon GT in Spark yellow mica would be the dog's danglies 😆 I will keep an eye out for a future purchase for sure. The seats are almost like the OEM Recaros... electric adjustment for fore/aft and tilt movements except reclining.   
    • Yes!! I love these! It's a shame its not the wagon though!   Thank everything that's holy that it doesn't have the interior of the Aussie delivered ones. Those seats are so much nicer.  
    • I'm both sorry and thankful that you do that. 
    • 2001 BE5D Subaru Legacy B4 RSK (3rd gen) EJ208 (pink injector) Twin Turbo 280PS 5-speed manual Full time 4WD "RSK" grade which means all of the above LQC option which means stock rear spoiler  I got it primarily to export to someone outside Japan who was interested. These BE5 Legacy B4 RSKs are going through a bit of a resurgence right know in Japan as they are one of the few cars from the "turbo, manual, RWD/4WD, 280hp gentleman's agreement era" cars that don't require stupid money to purchase. Which for some people might be a good opportunity to get as a base for restoration. If I can't find anyone to purchase it I will certainly be doing that myself over the long term. Why? Because it's properly fast in stock form, handles well enough for a GT sedan, there's still enough aftermarket and (if you can wait a while) genuine part support to make it a restoration candidate (<-- that will only get worse over time so it's a case of do it now or choose get a BL5 4th Gen). Mechanically it's fine, has only 89,200kms on the odometer. The problem with this car is that the body and exterior trims are weathered from at least the last 10 years being parked outdoors. I'm the 3rd owner, the first owner was the one that had it for 14 years and barely drove it, had a low-speed front impact (which didn't damage anything behind the radiator support) and got it fixed and sold it. The 2nd owner put most of the kms on it and parked it outside for the last 10 years, hence the door rubbers have seen better days but if you overlook those cosmetic details, it presents pretty nicely. There is some minor rust on the LH rear wheel arch which I'll have looked at too at some stage.  Also as you'd expect from a car this age, the clear top coat is gone, leaving a satin finish on the roof.  Mechanically it's fine (as you would expect from a car with less than 100K kms) but the steering does feel slightly vague around the centre position at higher speeds. So first on the list is to get the steering rack bushes looked at. There's also the Lock button on the remote which doesn't work, but the Open button does.... it means that the anti-theft system thinks it's always open? It seems like if you open the car and don't start the engine within 3 mins or so the anti-theft kicks in again without any beeps or signals. So if you got to start it after that, it won't. You have to push the open button again. That's how I understand it anyway. Just a small irritation but not a big problem to sort out. There's only one mod, the Wangan SPL muffler. Just a tad louder than stock. It's a really good mod for those who don't want to wake the neighbours but still want to hear a more prominent unequal length header EJ20 sound. Anyway I hope to get all those things done eventually, that is unless someone wanted to import it to their country from Japan (where I live). I'm open for negotiations as I really would like a Skyline... but this will definitely suffice in the meantime 🙂 *Disclaimer: This is how I picked it up from the dealer, minus the stuff on the back seat. I haven't cleaned the engine bay or done a thorough exterior clean, aside from spray painting the wipers. 
    • Wow, even with the Audi logo centre caps. I love OEM wheel mismatches. 
×
×
  • Create New...