Jump to content
SAU Community

Recommended Posts

Hey,

I'll give the full story,

first problem with factory ecu, driving along dropped to five cylinders all over a sudden

narrowed that down the the no2 cylinder injector not firing due to no pulse from the ecu.

Purchased link gtst second hand for a steal, plugged in and tuned running really well made 211kw at the wheels with standard turbo pump and injectors,

next day car devolpes a miss off boost, which very quicky gets worse and actually drops to five cylinders by the time i get it back to the mechanic,

starting it up again the car has now also devolped a knock (big end bearing) it is quickly discovered that it is the no.2 cylinder that is not firing again by removing the coil lead.

upon removing the spark plug we see that it is absoulutly fried missing pretty much the whole top, we then checked the no.1 spark plug also rooted but not as bad, then we checked the no.3 spark plug perfect?!?

The mechanic has put this down to the no.1 and no.2 injectors been stuffed, although this is still to be tested, my question is...

is this sort of thing heard of or is it more likely a fault in the ecu, been second hand or perphaps poor tuning??? I really want to get this narrowed down cos the new motor (rb30det) is not going to be cheap and i really don't want to have the same problem happen to it

thanks in advance

(sorry about the novel)

Link to comment
https://www.sau.com.au/forums/topic/136062-blown-motor-ecu-injecotors-tune/
Share on other sites

its something to do with the engine, coilpacks, injectors etc.

the ecu won't just develop a problem, and being stock 33 ecu its unlikely to be remapped. even a bad tune wouldnt usually cause that.

the obvious things to me would be:

leakdown / compression test

check coilpacks

find out why #2 is shagged

well originally we lost pulse to the injector, but still picked up a signal going in and out of the injector, the new link ecu got it running on 6 cylinders again but yeah as you said it leaned out and bang

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

    • @soviet_merlin Thanks mate!  Nothing too major but will hold me up for a while. I've got lymphomas to get taken off the back of my neck and the middle of my spine which always conjures scary thoughts!  It sounds worse than it is. Yeah great, conjuring more rabbit hole deepening , just what I need! 🤣  
    • I'd argue the F50 kit I got is very good value. For ~2k I got the calipers (refurbed condition), adapters, pads, brake lines, rotors, and top hats. I think you'd be pretty hard to get Evo/GTR/350z brembos + the additional hardware for similar money. Used market for a pair of front calipers alone I've seen tend to run anywhere from $1500-2000 depending on condition.    That said, something like a GTR or 350z brembo is a lot easier to adapt to the Silvia. 
    • Is there a significant price difference between the Evo/gtr/350z brembos vs the F50? Looks amazing.
    • I was actually being a tightarse at the time LOL... My OCD is tickling me into running a 2nd 8AN Teflon hose all the way down and removing the 2x OEM hardlines. My other side of my brain is telling me to run 2x hardlines front to back (also acts as a fuel cooler, so win win).
    • As I mentioned in an earlier post, I had some trouble with the Silvia's brakes dragging back in 2023. I managed to sort it out then, but the same problem came back to bite me late last year. Just take a look at the picture – I had a feeling the handbrake was acting up again, and I was right. Anyway, I'd been wanting to upgrade to bigger brakes for a while. Not that the Silvia's brakes were bad, but it was more of a "want" than a "need", you know? It was funny, though – at the time, I couldn't find any Evo Brembos, 350Z Brembos, or GTR Brembos for a decent price (of course, tons of them popped up online after I already bought my kit!). I ended up going with an F50 Brembo kit, which came with adapters, brake lines, 330mm rotors, and top hats. The F50 Brembo caliper was used in a few other cars too, like the FPV. I also decided this was the perfect opportunity to ditch the Silvia's ridiculous rear brakes and that awful handbrake (some of you were definitely right about that!). I picked up some R33 calipers and all the necessary bits – rear drums, backing plates, and new hardware to refurbish the calipers. Of course, it wouldn't be a project without a few hiccups. Turns out the brake master cylinder was playing up and basically (to put it simply) keeping the brakes engaged. I had it overhauled, and after some adjustments, everything was working again. The whole process took a while, as you can imagine. To top it off, the front right wheel bearings were shot and needed replacing too. This is a rare occasion where I'm posting an update while it's all still fresh! These pictures were taken just this afternoon.
×
×
  • Create New...