causes of erratic idling

**benchph1** · October 1st, 2003 09:01 PM

car: 1996 toyota corolla xl 1300 carb.

kotse ng friend ko to, pinaltan na namin ng OEM spark plugs,
top-dead center naman ang timing, ok naman ang hi-tension wires, tsaka nilinis namin yng carb gamit spray carb cleaner.

pero mapalag pa rin. pag idling lang naman pero pag nagaaccelerate na wala na.:confused:

**roydok** · October 1st, 2003 09:55 PM

Check the fuel and air filters at baka madumi na and needs replacement. ;)

**rodcarolino** · October 2nd, 2003 12:06 PM

or engine supports

**jackaroo** · October 3rd, 2003 04:31 PM

Is that the right timing per toyota manual? Check the specs, think it may be 5-8 deg Btdc.
Did you adjust the mixture via the air screw? Should be set at the highest idling point or before the idling roughens up.
Also, check your throttle stop screw, usually a long screw with a white knob.

**joreb0** · October 11th, 2003 06:05 PM

Originally posted by benchph1
car: 1996 toyota corolla xl 1300 carb.

kotse ng friend ko to, pinaltan na namin ng OEM spark plugs,
top-dead center naman ang timing, ok naman ang hi-tension wires, tsaka nilinis namin yng carb gamit spray carb cleaner.

pero mapalag pa rin. pag idling lang naman pero pag nagaaccelerate na wala na.:confused:

Bench,

Try spraying carb cleaner around the vacuum hose connections, pag lumala ang idle, you have vacuum leak. Rubber vacuum hoses tend to deteriorate with age. Look around for cracked ends. If the hose is long enough, you can cut off the cracked portion and re-insert.

**spazzkid** · October 11th, 2003 08:26 PM

OT: how do i use a carb cleaner? those are the ones that come in spray bottles right?

**joreb0** · October 12th, 2003 02:01 AM

Originally posted by spazzkid
OT: how do i use a carb cleaner? those are the ones that come in spray bottles right?

I'm talking about the ones that come in spray cans (aerosol). Be careful not to spray it on paint, it will leave a blemish.

**spazzkid** · October 12th, 2003 02:06 AM

so bubuksan ko ang carb then spray it on?

**joreb0** · October 12th, 2003 08:36 AM

Originally posted by spazzkid
so bubuksan ko ang carb then spray it on?

Yes, take off the air cleaner filter and you can spray it in there any where you can see gum and dirt buildup preferably while engine is running on idle. The engine will die so rev it up a little bit while spraying.:D :D :D