Jump to content
SAU Community

Recommended Posts

im having a weird no start issue with my s1 rb25det. i confirmed fuel, spark, new cas, battery is good. when i crank it over it cranks and when normally it would fire up it instead my dash lights go dim and theres this weird winding noise. i kept trying and thought i flooded my engine, so i pulled out the plugs, some fuel but not flooded. i blew air into the cyl and cleaned off the plugs just in case. same thing happens. it was literally just starting before, all i did was adjust the CAS on the last fire up to correct the timing. its almost like the battery is bad, but its not holds 12v even after attempting to crank a half dozen times. im pretty stumped... the winding noise is something i never heard or seen before. opinions would be greatly appriciated!

Link to comment
https://www.sau.com.au/forums/topic/264917-weird-no-start/
Share on other sites

so i played with the injector settings in FC-edit (im pretty sure they are right now), fully charged the battery, made sure the cylinders werent flooded and re-aligned the CAS and still the same results. getting really irritating.

so i decide to try to check the CAS per FSM but im a little confused. im going by this:

cas.jpg

im trying to follow it but its a little confusing to me. i can hear the injectors going off when i spin the shaft... when i check the voltage to #2 i get battery voltage, 3 and 4 depending on the position of the shaft its 5v or lower. nothing at 1.

is my CAS ok?

im just so fustrated with my car, it was literally just running and now it wont even start.

Link to comment
https://www.sau.com.au/forums/topic/264917-weird-no-start/#findComment-4529255
Share on other sites

worked on the car last night, basically started over as if i never checked anything. also put the battery on a battery charger prior to all this to eliminate that and make sure it was fully charged.

checked fuel pressure, and injectors. tried with lowering and also raising fuel pressure

confirmed spark

double checked coil and battery grounds, also added an extra ground from the intake manifold to the chasiss

double checked and re-tightend all intake manifold bolts and hoses and anything that can cause a vacuum leak

double checked all i/c piping and couplers

tried with my power fc datalogit base map, my orginal tuned map from last year, and a new map for this year compensating for my new injectors

tried re-aligning the CAS several times

tried with maf/afm plugged in and unplugged

checked and re-gapped (0.8mm) spark plugs

some flooding after trying all those things so i pulled all the plugs and left them off over night. have a new set of plugs (NGK V-Power BKR5E-11) ready to go in today after work, also going to spray some air into the cylinders to make sure theres no flooding.

and basically thats where im at...

Edited by ANVIL
Link to comment
https://www.sau.com.au/forums/topic/264917-weird-no-start/#findComment-4536521
Share on other sites

so i think i figured out whats wrong with my car... when working on it, i noticed a small rip in my timing belt. there must have either been some debris in the timing cover or i accidently grazed it or something while working on my engine. i immidately put the crank to TDC, and the cam gears were off by 4 teeth. i put a new belt on and re-timed it. still wouldnt start. would idling less than 2 min, and doing cranks be enough to bend valves? im really worried i bent my valves...

Edited by ANVIL
Link to comment
https://www.sau.com.au/forums/topic/264917-weird-no-start/#findComment-4538852
Share on other sites

Does your exhaust cam still have the locating pin for the CAS on it still or has it been snapped off?? If it has been snapped off youll have to lign up the CAS visually where you can see the marks on the end of the cam...just a suggestion, seems to catch a few people out when they pull out the CAS..

Link to comment
https://www.sau.com.au/forums/topic/264917-weird-no-start/#findComment-4539015
Share on other sites

can some one post up some good pics of the exhaust camshaft where the CAS goes and also a pic of the inside of their CAS? the key on my camshaft broke off and i need to be 100% sure on how to put it on... im suspecting something with the CAS because it was the only thing i actually touched before i got this no start condition...

Link to comment
https://www.sau.com.au/forums/topic/264917-weird-no-start/#findComment-4542168
Share on other sites

I can get you a pic tonight bud, But grab a torch and take a look at the end of the cam where the keyway used to be, It most probably wouldnt have snapped off clean, so you should be able to see the raised/rippled half moon shaped surface that it has snapped off.

Once you work out which side of the circle the keyway was on, mark either side of the hole the CAS sits in, (so when you go yo put the CAS you can tell where it is meant to sit)

Then grab the CAS and mark the side of it where the keyway is meant to sit.

Line up the marks, then slide into place...

Hope you can understand that, If not ill get pics tonight and demo it for you..

Link to comment
https://www.sau.com.au/forums/topic/264917-weird-no-start/#findComment-4546137
Share on other sites

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

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...