PDA

View Full Version : Car Playing up, feels like lack of fuel



rensei
13-12-2005, 07:39 PM
hey guys im pretty confused,
every now and then when i put my foot down to accelerate through the gears, the car wont rev out over 2500 revs, it starts to chug and feels what seems like its starving for fuel, but when i put a full tank of fuel in, the problem still stays there, this happens regularly but then seems to subside, i cleaned out the dizzy of rust etc, and it seems like a good spark, re did my fuel filter, etc im just confused. help would be appreciated.
Cheers

Ol' Fart
13-12-2005, 07:52 PM
what engine dood, your public profile says 3.5 litre but your posted as 1st gen

ICUH8N
13-12-2005, 08:25 PM
rensei, do you mean that when you hit 2500rpm the car struggles without you letting your foot off the accelerator and letting it change gears, and then go again until you reach the speed limit? If so, and are running a first gen carby 2.6L astron 2 then check out the air filter. I had the same problem, so I replaced the air filter and stuff, got it re-tuned and what not.

BTW, does it smell likes it running rich a bit?

rensei
13-12-2005, 10:33 PM
rensei, do you mean that when you hit 2500rpm the car struggles without you letting your foot off the accelerator and letting it change gears, and then go again until you reach the speed limit? If so, and are running a first gen carby 2.6L astron 2 then check out the air filter. I had the same problem, so I replaced the air filter and stuff, got it re-tuned and what not.

BTW, does it smell likes it running rich a bit?

it does, hang on i have a 2.6 astron 2 (dunno why my settings have a 3.5)
Any ways normally car is fine, revs out to redline usually with ease, but sometimes it plays up where in all gears i put my foot down and it starts struggleing, even when cruising it pulls, and slows down pushes, (imagine that your car is running out of fuel and whenyou put your foot down thats what happens to me). Except its not running out of fuel, and it isnt a fuel problem. lol it sucks, cause i go to pull out into traffic sometimes, and it splutters horrifically, and sort of backfires, but not loud, sounds sort of like it isnt igniting properly.

*edit* sorry ill add a bit more
Tis a carby motor, and it does smell like its running rich (mind you this is only when i sit @ idol)
i put my foot down in first, goes fine till it hits 2500, then struggles, wont go over 3g's, does the same in 2nd, 3,4,5 wont let me accelerate much, have to accelertate a tiny bit
When Cruising: pushes and pulls, and gives a really rough ride.
And then all of a sudden it can go normal, and then it stops.

ICUH8N
13-12-2005, 10:43 PM
So it's a manual, eh? Change gears at 2500rpm :P

rensei
13-12-2005, 11:00 PM
lol, gets up to it too quick lol, umm if i change at 2500, 1st would be 10km, 2nd around 20 if dat etc lol too slow

Terrorsidic
14-12-2005, 12:53 AM
/me guesses fuel pump

Ol' Fart
14-12-2005, 08:31 AM
Could be fuel pump, could be your choke is staying on a bit, could be your jets need a bloody good blow out, might be accelerator pump or just that it needs a carby overhaul.

Might even be your float level is too high.

I got the carb scanned outta the manual so i'll send it to ya. :D

rensei
14-12-2005, 08:49 AM
fuel pump i think is fine, cause today i turn it on, runs sweet revs out to 5 and a half, not bad for a non worked motor.
i dont have an automatic choke, i disabled it

Ol' Fart
14-12-2005, 08:50 AM
fuel pump i think is fine, cause today i turn it on, runs sweet revs out to 5 and a half, not bad for a non worked motor.
i dont have an automatic choke, i disabled it


Mite just be dirty jets or float level to high causing it to flood a bit. Easy to fix :D

ICUH8N
14-12-2005, 09:43 AM
Yeah, just sounds like it's running a little too rich to me, as Ol Fart said, shouldn't be too hard to fix.

rensei
14-12-2005, 06:30 PM
mmm, i dont think it is fuel though, cause if it was running too rich or float level too high wouldnt it run like that all the time?
i think its more electrical

ICUH8N
14-12-2005, 08:24 PM
The only thing I can think of other than what I said before would be the secondaries and the choke. Also check air-filter.

Ol' Fart
14-12-2005, 08:28 PM
mmm, i dont think it is fuel though, cause if it was running too rich or float level too high wouldnt it run like that all the time?
i think its more electrical

Yeah, I spose it could be a dying plug or lead; cracked, dirty or worn dizzie cap or rotor. EZ to check.

Ralliart 410
14-12-2005, 08:29 PM
Does it blow out a lot of black smoke from the exhaust when the problem happens? To me it sounds like a sticky float or faulty secondary's. For a test you could try disconnecting the vaccum hose for the secondary's and see if it still does it.

Out of interest, have you checked the dizzy cap for cracks?

Gerard
14-12-2005, 08:34 PM
replace the spark plugs.. sounds like one is on its way out

rensei
14-12-2005, 08:43 PM
ummm cleaned ot dizzy cap, not cracked bit of rust but cleared all them up

turbo_charade
15-12-2005, 06:43 AM
at what rough rpm does the secondary throttle open i wonder :confused: my guess is that its around that rpm and that there is a problem with that.

keep it at less than half throttle and rev it out slowly, if the problem doesn't appear then we've nailed the problem on the head.

ohh i love a good carbi thread :D

Ol' Fart
15-12-2005, 09:30 AM
at what rough rpm does the secondary throttle open i wonder :confused: my guess is that its around that rpm and that there is a problem with that.

keep it at less than half throttle and rev it out slowly, if the problem doesn't appear then we've nailed the problem on the head.

ohh i love a good carbi thread :D


Good call TC, I shoulda thort of that, too busy apologisin I guess lol

Shaddap about carbie threads or I'll mention distributer threads :bowrofl:

ICUH8N
15-12-2005, 09:52 AM
But I already said that :P Why does he get the credit? Haha ;-)

turbo_charade
15-12-2005, 11:08 AM
stop stealing my thunder :P

he needs to test it out by doing what i said, if the problem is still there its an ign problem... and as brian said, oh how i love a good ignition thread :doubt:

Ol' Fart
15-12-2005, 11:28 AM
But I already said that :P Why does he get the credit? Haha ;-)

Well hush mah grits, so ya did. :D

Cudos old chap cudos :clap: :clap: :D

ICUH8N
15-12-2005, 11:44 AM
Heheheh ;-)

turbo_charade
15-12-2005, 12:29 PM
I think you mean kudos brian :P

rensei
15-12-2005, 01:34 PM
at what rough rpm does the secondary throttle open i wonder :confused: my guess is that its around that rpm and that there is a problem with that.

keep it at less than half throttle and rev it out slowly, if the problem doesn't appear then we've nailed the problem on the head.

ohh i love a good carbi thread :D

It doesnt matter how slow i rev it out to, whenever it plays up and it reaches anything around 2500 or above, it decides to splutter and carry on, and bounce as if your kangaroo hoping it etc

rensei
15-12-2005, 01:36 PM
my theory, is fairly right it doesnt seem like a fuel problem, its more electrical wise, i cleaned out the dizy etc made sure it was tracking right, had a bit of a problem afterward, so im going to get new plugs and points, and leads (mind you they arent that old i dont think, but i guess new ones would help.)

TM-Terror
15-12-2005, 08:51 PM
replace the leads, spark plugs and coil and if the rotor arm on the dizzy looks a little old or corroded id replace that too. im thinking the coil is stuggling to build power fast enough, so above 2500rpm tit isnt reliably firing all cylinder's.

rensei
15-12-2005, 09:35 PM
correct, splutters, hops skips jumps lol, back fires but not loud backfiring you can only hear it if u say get near a car and the echo off the car, lets you hear it (if you understand what i mean.)

turbo_charade
16-12-2005, 07:05 AM
replace the leads, spark plugs and coil and if the rotor arm on the dizzy looks a little old or corroded id replace that too. im thinking the coil is stuggling to build power fast enough, so above 2500rpm tit isnt reliably firing all cylinder's.
or he could just check them :nuts: and save 50 bucks.

so you revved it out using very little throttle?

Ol' Fart
16-12-2005, 08:30 AM
I think you mean kudos brian :P

Nah, that wud meen spellin it right, just wudnt B me. lol

rensei
16-12-2005, 12:20 PM
yeah, regardless of how hard i put my foot on the throttle when it hits around 2500 the thing starts to play up, (mind you if i put my foot flat to the floor, it just shakes back and fourth and gains no speed.

Gerard
16-12-2005, 12:42 PM
why havent u replaced the spark plugs yet :rant:

mad lanté
16-12-2005, 09:34 PM
i have a similar problem in the mornings
it will be ok till 2300 odd then i floor it and i get nothing i can hear air being sucked in but i get nothing, then i pull over then go to start again the motor will just cut in and out and wont move
i just let it idle for 5-10mins then its fine i have no idea why it does this
a mates TE does EXACTLY the same, where thinking its either fuel or elec prob im thinkin because it only does it in the morning its moisture getting in somewhere cos when its a hot morning it doesnt do it
WEIRD!

rensei
17-12-2005, 09:29 AM
at what rough rpm does the secondary throttle open i wonder :confused: my guess is that its around that rpm and that there is a problem with that.

keep it at less than half throttle and rev it out slowly, if the problem doesn't appear then we've nailed the problem on the head.

ohh i love a good carbi thread :D

Ha, it happened again last night, i was driving it. got pretty bad as well, my mates were telling me that when it spluttered it was bellowing out black smoke, (just put 50 bucks worth of fuel in :cry: ) so yer, it went like that for around 50k's of driving and got to a stage where i couldnt get over 40k in any gear. so i thought fk it, cause i dont have the money at this time to get a recond carby, i whacked that nulon, injector and carby cleaner, seen if that made it any better. It says it works fast, it didnt, i got to a mates place, left it there for around 3 or 4 hours. jumped back in and it was fine, revving out through the gears 80k second gear :cool: (not bad for stock.)
But at times at high revs, say 4 or 5 grand you can feel it coming back some times, it doesnt have no way near the power it should, or takes too long to rev out.
I hope that is enough information

ICUH8N
17-12-2005, 09:49 AM
Don't rev to 4-5000 rpm, which you probably shouldn't considering it's a reasonably old car and should be looked after anyway :-)

rensei
17-12-2005, 05:24 PM
yeah i guess, it is pi@ing me off pretty bad, im thinking of putting a new fuel pump in it. SOme one mentioned to me it might be the idel control switch.

turbo_charade
18-12-2005, 06:01 AM
Its really hard to diagnose a problem over the internet. If you take the car to a mechanic and ask him to figure out what is wrong, he will find the problem, charge you 30 dollars and then your fix it yourself with second hand parts for cheap.

KING EGO
18-12-2005, 06:05 AM
Change the plugs in it first then start looking at leads... do the simple stuff first.. :D

rensei
18-12-2005, 11:26 AM
kk ill do that today, couldnt do it sooner as i didnt have enough money lol. ill keep you posted