S1 Bill

Just fitted -31 actuator and was in process of setting the boost to 11 psi,anyway took car out for a shot and it instantly hit 18psi of boost it then gave a big puff of smoke and a bang,took it back to the garage and it wouldn't start,well i then noticed it had blew the blank out where the dump valve used to be,i put a new blank in and it fired up but now it won't tick over I have checked the oil cap and dipstick,is there anywhere else obvious i should check for air leaks as i assume this is the problem,when the car is started and i keep the throttle down a little the engine sounds fine,so i don't think it's anything drastic
Please help guys

S1 Bill

I've now had all boost/vacum hoses off and can't see a problem with them,i have turned up the idle via the accelerator cable and the car is ticking over at 1200rpm and sounds fine but the vacum on my boost gauge used to show between 15&20 but it is now down to 10,so correct me if i'm wrong but surely i have burst something with the boost being to high

Versus_Creations

iTrader: (1)

had loads of help here hey bud..

Did you have a chip in the ECU to be able to run more than std pressure?

When the car does start and run, is it running on all 4?

SafeChav

Check you haven't split any hoses, obviously the car hasn't seen that level of boost before if its firing the dump valve plug out etc!

Have you got samco's or standard rubber hoses?

DazC

iTrader: (1)

You could have blown out an inlet manifold gasket although it's not that common.

To check for an air leak, run the car and spray WD40 round all the joints and pipes including the servo where the front half is crimped to the back half (basically anywhere that should have a seal that is part of the induction system). If you see the WD40 being sucked into the induction system anywhere, that is your leak.

SafeChav

DazC won't the car also pick up a little off the WD40 if its sucking it in?

S1 Bill

Thanks for the replys guys,When i start the car it's firing on all 4(i just have to feather the throttle a little to keep it going),My car has been running 4 psi for about 2years(the guy before told me he thought this was the norm) basically i got the amal valve working and it was boosting to 15 and dropping to 10( my car has a turbo systems chip fitted) so i thought weak actuator so i have now fitted a -31,I had the car out last night and done 40/50 miles with no problem but when pulling up to a junction etc it does'nt want to tickover !
I have had all hoses off but i cannot see anything split,it's still on the standard items.I have also removed the wiring from the amal valve and just let the car run at the actuator lift off(7/8 psi) as i say it's going fine making 7 psi off boost and holding but it just won't tickover and i know for a fact my vacum gauge has dropped pressure.Any more advice guys would be much appreciated ..... Jano i thought no-one was going to answer lol

SafeChav

Is the vacuum gauge reading eratically on tickover? If you are certain there are no hoses split, i would advide removing the brather pipe, and blocking the entry to the air boc temporarily, and seeing if it will itdle, and then if no use, also remove and block off the pipe to the brake servo. And if its still doing it, you may of blown the intercooler apart or blown out an inlet manifold gasket as Daz said

S1 Bill

Cheers mate,the gauge isn't eractic at all !! it just seems to have dropped,it used to tickover at -15/20 and now it's down to 10 if i drop the revs below 1250 rpm it just cuts out so i have them adjusted to 1500 just now,See when you say block of the breather to the air boc,is this the part from the left handside of the rocker cover ??
Another thing regarding the intercooler,it's in really poor condition and i was thinking along they lines also,is there away i could possible tell if i have blewn the intercooler ??
Thanks again Bill

SafeChav

How have you got it idling that high? With the idle screw? Or have you adjusted the cable?

Indeed the big pipe running from the rocker cover, the whole engine itself is a potential air leak, so even a leaky rocker gasket or sump gasket is going to give you problems.

Well, you could remove the intercooler and have it pressure tested, or do it yourself with an air line and bung the holes up and see if you can hear leaking air.

If its in a poor state like you say you might of blown a hole in it, standard ones are nasty things Perfect excuse for a nice front mount if you have

S1 Bill

Yep,i've adjusted it through the cable,i'm thinking along the lines of the intercooler,if i remove and link the two rubbers with a bit 2" pipe then surely if the intercooler was at fault it would tickover with it removed ??

SafeChav

indeed, don't try driving it though for god sake

S1 Bill

Thanks for your help SafeChav,i'll give you a shout later and hopefully the intercooler is the problem !!!

S1 Bill

I took the breather pipe off from the rocker cover and blanked it off,what a difference the idle evened out and wasn't lumpy at all and when i connected it back up it went back to being lumpy and wanting to die,am i right in saying the problem is with the pipework related to the breather ?

SafeChav

In that case, you have a leak on the engine.

Check the dipstick is in properly, rocker gasket, sump gasket, oil cap seal, etc etc

Versus_Creations

iTrader: (1)

aah missed the rest of this thread.. Looks like you have had some help tho

HORNETS7

my vacuum pressure on tickover is -10-12 so i would say thats ok!

have u got any noticible oil leaks?

sounds like u could have blown out the sump gasket to me!

SafeChav

That all depends on what unit your gauge reads in.....

S1 JOHN

does it have an uprated breather ? if its still the standard one ive heard of the plastic breather pot on the left splitting, alos under the inlet manifold is an auxillary air device mine cracked in half a while back and it was running rough as

SafeChav

what do you do to your car to do that kind of damage

S1 Bill

the car doesn't have any oil leaks and is still on the standard breather system,if the plastic thing had broke surely when i disconnect it from the rocker cover and blank it off it would still idle the same as when it is connected !!

SafeChav

What plastic thing?

S1 Bill

The breather coming from the rocker cover,i read one of the replys further up and the guy said this could be split but surely if it was it wouldn't make any difference if it was removed from the rocker cover or not,if it was split the tickover wouldn't improve if i blanked it,am i right in saying that

SafeChav

With a standard breather system, any leak anywhere on the engine will cause problems. If you blank off the connection into the airbox then it eliminates the whole engine from being an air leak.

So, yours being a standard breather, if the oil control filter has a split, thats an air leak!