80 series not wanting to accelerate

just got oil change so thats not it....just had a bit if a look at lcool....matrix build up on injecters....needs "hot flush".....so i wonder what they charge for thar sorta thing...

laura

Would have thought that an 80 series would be be old enough to have it's own "hot flushes"

Disco

well could be but no winch in...maybe ive git a few of mums bricks under the bonnet still,,,lol

no new 4b for you yet???

laura

Not yet, still trying to find the one I'm after.
Mind you I've looked at close to 30 ATM.

Kev

good idea but aint diesel....its petrol / lpg. the filter is top of the list but im thinking we're due to do something to it that costs a bucket load....lol....

laura

In that case, check air filter and valve clearances.

nowimnumberone -

efi 4.5lt twincam...

Laura

Hi Dallas.......Had it on Petrol when it was happening lately, filled in with lpg yest and hasnt done it since.....

Laura

Hey G'day Laura,

So it sounds like it's a fuel delivery problem specific to Petrol (as long as it's not simply having a good run).

I don't think it'll be anything related to the fuel pump as it simply pumps when powered & isn't relevant to engine operating temp.

If it's carby then check the plate height on the mixer.
If it's EFI then that's a whole different kettle of fish.....
When you are running on LPG you are actually bypassing alot of the vehicles sensors so if they are giving you grief, you will mainly experience it only when on petrol. There isn't that many sensors in the system really. Air Flow Meters / Air Mass Meters are usually what gives trouble most of the time. This tells the cars computer how much air is going into the engine & the computer calibrates the Petrol Injection accordingly so if the AFM is giving the wrong info then the engine will have the wrong amount of Petrol being delivered so it'll run poorly. Apart from that you have the Throttle Position Sensor which is also used by the gas in most systems so would effect both fuels or the coolant temp sensor which the cars computer uses to know how to calibrate the Petrol delivery. In all honesty i'd be surprised if it was giving you trouble. It's not impossible but they very rarely play up.

I'd be checking the Air Flow Meter / Air Mass Meter (whichever it has) 1st off the rank. If it comes up ok then go further with other sensors.

Keep In Touch

Regards
Dallas Green

Changed fuel filter but havent had the chance to run her really cold on petrol but i think prob is kinda solved, for now....got a pretty big gear box leak and there's oil coming out of motor too....aaahhhh...never ending !!!

Going to run some injector cleaner in it and give her a clean out...

When its cold, and its down this for ages, (on lpg) it doesnt like accelerating and almost stalls but comes good if you stop accelerating and then try to get going...just another one of those things that you never think of fixing except for when it happens first thing in the morning!!

Cheers,

Laura