Jump to content
SAU Community

Recommended Posts

so everythings hooked up

I have

Spark'

Fuel

Air

compression 140-150 (cold comp test) across all 6

but the car wont start it cranks over and pops out the pod but doesnt run

I have brand new coil packs and spark plugs

20L of brand new 95 fuel with octane booster so 105ron

only thing I can think of is the advanced timing on the cas is out any ideas

engine is a rb25det neo in an r32 with lots of bolt ons

Link to comment
https://www.sau.com.au/forums/topic/374271-car-pops-but-wont-start/
Share on other sites

should be able to run without the CAS plugged in, should just show engine light, but your bolt on's might be the problem. have you checked everything is in 100% working order? when i did a conversion i found out that my injectors werent getting enough juice so was starving on fuel, still got bit of fuel, but not enough to run.

coilpacks get enough voltage??? or even putting out enough for a big enough spark?

Weird ive always been told you have to have the cas plugged in to start

my injectors are the stock neo injectors in a greedy plenum with a top feed fuel rail and then a tomei fpr the spark plugs are covered in fuel when I take them out so don't think thats the issue but could be wrong

I have brand new plugs gapped at 0.8mm with dsr coils and have pulled each one out and checked the spark it seems fine to me

maybe my injectors arent mounted properly I had issue when fitting them will look again

Unless the engine is seriously modified, it shouldn't need a 0.8 spark gap. Try opening the gap out a bit, maybe 1mm.

If the plugs are coming out "wet", then it is obvious fuel is getting into the cylinders. Make sure you dry them off before re-fitting them.

Try starting with a bit of throttle - let some air in to match the apparent additional fuel. Also, try starting while slowly adjusting the CAS (if you suspect the CAS might be mis-adjusted).

Have you checked the fuel pressure that the fpr is delivering?

  • 4 weeks later...

I'm having a similar problem on my series 1 rb25 in my r32. Everything is good such as fuel, spark and compression and timing. But all It does is back fire when I try and start it. A mechanic suggested the battery might not be good enough. I trickle charged it for 24 hours but still no go. The battery is about 5 years old though and has been relocated to the boot

Is say its coil pack related. Have u teasted spark?? Checked the fuel is flowing? Theres a trick with twisting the cas whilst ignition is on to hear ur inj firing. I had fuel lines wrong way round once, obviously didnt fire

yep i have spark on all 6, and good compression on all 6. got a new battery cos the one i had wasnt the best. It sounds a lot better and closer to starting now, but its just not getting there. all injectors are working and tested and i have my fuel lines around the right way.

starting to get frustrated :(

Spoke to my mechanic poping out the pod filter is timing out and poping out the exhaughst is tuning eg unburnt petrol hitting the hot exhaughst he had an mr2 with the problem and actually showed me it was actually intresting

well i got my car to start just now. I turned the CAS pin 90 degrees cranked and she fired right up. Now onto the next problem. when i start it it just revs up hard with out my pushing the pedal at all. I loosened the throttle cable so its loose but it still keeps doing it. Any ideas?

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

    • Don't "upload" the pictures. Just copy the picture direct from somewhere (I usually am pasting screenshots or something else that I have on the clipboard as an image, not as a file" and just paste it direct into the post editor. Just like you were pasting it into a Word doc or something. You can't damage something if you lift it where you are supposed to. If you look carefully at the correct jacking points, you will see that they are reinforced right there. And nowhere else. That is where the "foot" of the factory jack is supposed to sit. That's why you need rubber pads with slots. 10mm might not be deep enough. Note also that the slots are not required if the pinchweld has already been slammed flat. You could just lift it at the correct spot with a flat pad, because the damage is already done. No point in making worse though, if it is recoverable. IF. Yes, that's called a chassis rail. You can lift carefully on these, if you spread the load. A decent block of wood is good. But keep in mind what I said before. Any time you start doing this sort of thing, you are off the normal path and into "be bloody careful", because it is obviously not stable. Dumb. The refinforcement is already there. See above.
    • yeah looks like they've been lifted there previously but with solid not slitted rubber blocks. I'd just bend them back (combination of vice grips or hammer with some sort of drift, then hit the area with underbody protection paint. As for the siderails, I'd call those chassis rails and that is exactly what I meant about being careful with the balance point. You can probably lift off them at the point where the 2 pieces overlap, but you need to be careful with the forward balance of the car if you do when the engine is in....sills are a better choice. I guess you could weld some reinforcement in the sill area near the jacking points but it shouldn't be necessary if you use blocks with a slit. If you do want to reinforce it I'd use square section equal or taller than the seam and then just use flat rubber blocks for lifting
    • driver side sidemember and jacking point (looks the worst by far) driver side rear jack point passenger side sidemember and jack point passenger side rear jack point   Ignore my mug on the last photo. Turns out I was just too stupid to properly use the forum's attachment feature previously
    • Fk me, I guess next time I will try to use the onsite attachments feature. I find it hard to work with so far though because I can't move the images to where I want them to be. I will try to make a separate post with just images. As for lifting. The work I need to do for now involves the exhaust and engine mainly, so the arm covering the jacking points is not a problem. But I don't want to bend in the whole sill or underfloor by lifting the car at the original jack points. I found some rubber blocks, 125 by 125 with a 10mm wide and 10mm deep cutout, which I'm hoping will work for not hitting the jacking rail. The sidemember, as seen in the service manual, are the rectangular frame rails that come from the front of the car and go alongside the gearbox and downpipe. Those that get crushed inwards if you use them for a floorjack. They are already slightly bent in from being used to hoist by other people. I think cutting off the jacking points and welding or bolting on a reinforcement plate along the sill might not be a dumb idea. Or is it dumb?     A 2 post hoist is what I'm gonna work with, but not for any underbody work, just leaky engine and exhaust work so far. Depends on what else I find that might need immediate attention. For metalwork on the sills I think I'd just bring the car to a panel beater. What's your take on getting rid of the original jacking rails and putting reinforcement plates along the sills?
    • Yeah titanium always looks cool but I don't need that, just regular pipes would be fine. But I am really struggling to find any full hardpipe kit that is still for sale.
×
×
  • Create New...