Engine cuts out when slowing down

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sun Dec 08, 2013 5:03 pm

Might be worth checking the timing is set correctly, because I'd have thought it should still run ok on 95 octane - 97 octane might just be covering that problem up?

Rob_Cool1 · Post by **Rob_Cool1** » Sun Dec 08, 2013 5:14 pm

True, true, Il get the oil leak and rad sorted then take it for a tune as thats one of the things on my to do list! as its got adjustable cam pulleys i dont know if they've been set up right that may be an issue :/
It seems to be running a lot smoother now but it does need a tune so it's running at its best.

Can i change the injectors on it? I dont know the specs of the standard ones but I'd like to upgrade to like 400 - 500 cc injectors, il probably need to change the fuel rail, but as i dont know much about the engine yet and dont know many companies that sell performance parts that may have to wait

Post by **NafemanNathan** » Sun Dec 08, 2013 8:22 pm

Yeah running 95 will do that

My 3rd isn't a fan of 95 either. I used to have an S1 106 Rallye and that couldn't handle 95 at all. It would constantly stall when cruising up to roundabouts and traffic lights whenever I dipped the clutch. I always carried octane booster in the car in case I was stuck for fuel at limited petrol station. So fingers crossed that is your problem

'92 Si VTEC · Post by **jjmartin349571** » Sun Dec 08, 2013 9:36 pm

On my B20A2 Accord the fuel flap says to stick to 97 octane so I do! I'm guessing that as they don't have knock sensors the ignition timing isn't set for low octane fuel?

Rob_Cool1 · Post by **Rob_Cool1** » Sun Dec 08, 2013 9:59 pm

I'm guessing so, it ran so lumpy and spluttery at low revs so im guessing it just cant handle the 95 as well. Being quite an old engine it probably doesn't have the ECU mapping to compensate lower fuel grades :/ that and yeah im guessing the ignition is set for easier to burn fuel

Saying that, on the tank of fuel i used to get to Bath, Bristol then back (i spend £55 which was about 41 litres and used a can of redex) i did 294 miles which worked out at 33.6mpg!!

thats almost the same as my 1.4 fiesta :L

prelude91 · Post by **prelude91** » Sun Dec 08, 2013 11:34 pm

On a run I manage 40 plus mpg on my b20 a7, no real difference between 95 and 97, she is totally standard

Post by **Merlin** » Mon Dec 09, 2013 9:37 am

How does it idle normally? Low or lumpy at all?

Rob_Cool1 · Post by **Rob_Cool1** » Mon Dec 09, 2013 9:48 am

Well it changes quite a lot. Normally 800rpm, sometimes 1-1.2k rpm when warming up but sometimes 500-600rpm. And when idling at the lower 2 when you look at the needle it dips down slightly then goes back up constantly. you can feel it too a slight knocking too when the revs dip (only about 10-20 rpm)

Post by **Merlin** » Mon Dec 09, 2013 9:50 am

It could be TPS/IACV related. The car may not be getting enough air at idle and the sudden shutting off of the throttle body when you press the clutch may not be allowing enough air to get through.

You can test the TPS by measuring the resistance across its contacts. There is a test procedure in the service manual

Rob_Cool1 · Post by **Rob_Cool1** » Wed Dec 11, 2013 6:31 pm

Merlin wrote:It could be TPS/IACV related. The car may not be getting enough air at idle and the sudden shutting off of the throttle body when you press the clutch may not be allowing enough air to get through.

You can test the TPS by measuring the resistance across its contacts. There is a test procedure in the service manual

I think your right, I dont really like the design on the air filter because where it connects into the hole in the wing there are too many cables in the way so its only getting half the air. Also the other pipe that goes off behind the rad i thinks pointless, i know its supposed to help warm the car up quicker so ive disconnected it half way down so it acts as a 2nd inlet and seems to be fine, i haven't noticed a change in warm up either.

I ideally want to put an induction kit on, but one that doesn't lose power

something decent

but i cant seem to find any suitable for a 2g