problem on start up

[seans VL Calais]

hey guys i just put another motor in my vl as mine shat it self just another rb30 all runs well but when i first start it up i cant rev it or it will just die. I have to wait for about 20 seconds them it seems to be ok. it also wont start on first turnover i wait for the fuel rail to fill up then i turn the key and it wont start till i try again after letting the fuel rail prime for the second time. any ideas ??? any help would be much appreciated

[VL_5SPEED]

Mmmm thats the same as my VL on start up. It runs like complete **** on start up and for the first 30 seconds if you touch the throttle pedal the car stalls.... It runs rich and needs a tune.

[harry3]

the correct starting procedure for the 6 is turn on ign and wait for fuel pumps to stop working, then a brief run of the starter motor with foot away from the accelerator should make it start quickly

any other method causes rough running for a while, especially foot on accelerator while starting

[Bax]

Could it just be that the engine is cold and has to warm up?

I've lost all my sensors for things like that, so this winter is going to be interesting

[seans VL Calais]

i kno what the procedure is and if you read my post properly i never said i aclerate on start up i wait for the fuel pump to stop and it then it still wont start so i stop turning the key then it primes again then it will start but once its started if i aclerate it will die. as for it being cold im not to sire all my old engine use to start first go straight away and didnt even need to wait for it to prime. i think it may just need a tune up to. im an apprentice mechanic so ill just take it into work when its registered again

[Bax]

When you say when you first turn the key it doesn't start.

Are you saying it doesn't turn over? or it turns over but doesn't start?

[seans VL Calais]

When you say when you first turn the key it doesn't start.

Are you saying it doesn't turn over? or it turns over but doesn't start?

it wont turn over. it just keeps cranking.

[Panama]

turn over and crank is the same thing mate. i think you mean it turns over but wont fire

[Bax]

Yeah I didn't bother to reply when I saw turns over but won't crank.

I'll reply tomorrow when I'm thinking clearer.

[seans VL Calais]

lol yeah sorry guys. i ment wont fire.. i dunno what is wrong with it

[Holdfast]

hey guys i just put another motor in my vl as mine shat it self just another rb30 all runs well but when i first start it up i cant rev it or it will just die. I have to wait for about 20 seconds them it seems to be ok. it also wont start on first turnover i wait for the fuel rail to fill up then i turn the key and it wont start till i try again after letting the fuel rail prime for the second time. any ideas ??? any help would be much appreciated

Hi

Mate I'm no mechanic but I've had ny VL since about 1997 (2nd owner) in that time I've found the most common problem for my RB30 was to ensure the electrical sysystem has plenty of power.

I've never had a fuel problem, or starting prob except when the battery was suppose to be a few years old and was infact 4 years old.

A new battery! or better still ensuring that the positive and negative leads are in perfect condition and on really tight to provide good contact with the battery terminals will ensure your whole power system is ok.

If you find you have any slack in the terminals especially on the standard post type batteries it is possible to fill any void with a bent copper 1cent or 2cent coin.

So spose what I'm trying to say is that maybe look at the basics first and then move on

But don't take this post the wrong way, I'm not standing on a soap box tryin to preach but often with VL's it's just a loose connection that can really stuff up the readings to your ECU or other electrical components.

[natas.308]

have you cheked your tcs switch this is located at the back of your ecu where you adjust your revs, these sensors can fault or just **** themselves mainly if the last owner had washed the engine for some reason before selling it.

[jetspin_vn]

What kind of induction are you running? Standard or mod? Makes a big diff, modded induction tends to breathe a little too well on startup for some RB's, esp the 20's.

[seans VL Calais]

thanks for the advice (holdfast) ill go over everything tomorro and have a good look at all the conections. nah i havnt checked the tcs switch what is that ? lol and the ecu where you adjust your revs?? i really dont kno to much about vls even having owned for for quite some time now i still learn new things all the time. and ive only just started my mechanic apprenticeship about 2 months ago so still learning all the basics. as for induction im just running stock standard.

[Holdfast]

thanks for the advice (holdfast) ill go over everything tomorro and have a good look at all the conections. nah i havnt checked the tcs switch what is that ? lol and the ecu where you adjust your revs?? i really dont kno to much about vls even having owned for for quite some time now i still learn new things all the time. and ive only just started my mechanic apprenticeship about 2 months ago so still learning all the basics. as for induction im just running stock standard.

Sometime ago I found out that local libraries have workshop manuals.

At the time I was looking for detailed information of how to rebuild my manual gear box. The library had one manual, "Gregorys" No 238 for VL Series 6 cyl 1986 - 1988. It's quite good but there are also 2 other common car manuals which are "Haynes" Holden Commodore Automotive Repair Manual and also, "Max Ellery's" Factory Workshop Manual 1986 - 1988 VL.

If you look like keeping your VL for sometime, some of those books can be quite handy because they all show different detail and explain things quite well but some are easier to follow than others.

Personally I prefer the Max Ellery Edition; having said that, it's more expensive than the others.

I'm also guilty of calling components wrongly for example I call the ECCS (Engine Combustion Control System) module an ECU which is probably incorrect because years ago someone told me that the computer box in the left hand passenger side of the VL was an ECU(Electronic Control Unit) or computer.

Anyway, I'm rambling on and just trying to help. All the best with your car and well done on getting an Apprenticeship

[davidlock]

Its not your alarm playing up is it. I think its common for the key barrel in the glovebox to drop down and immobolise. But then I guess yours does start after a while though

[natas.308]

thanks for the advice (holdfast) ill go over everything tomorro and have a good look at all the conections. nah i havnt checked the tcs switch what is that ? lol and the ecu where you adjust your revs?? i really dont kno to much about vls even having owned for for quite some time now i still learn new things all the time. and ive only just started my mechanic apprenticeship about 2 months ago so still learning all the basics. as for induction im just running stock standard.

sorry eccs not ecu
tcs- throttle control sensor

[seans VL Calais]

ok well i think i found the problem. cleaned my battery terminals, bit better but still doesnt start how i would like it to but it does first shot now just takes about 5 seconds, but i kno my terminals are dodgy so im gonna get some new ones. I had a look at my air regulator and it was jamed shut,I took it off and tried adjusting it I got it open a tiny little bit but not as much as required, I think its stuffed. Now when i start it up it goes straight to 1000rpm instead of like 500rpm but still takes about 10 seconds til i can rev it without it dieing when i accelerate. so im gonna get another one from the wreckers and see how i go with that. got the info from r31skyline club, they got some good info on there for the rb30.