idles stumbles, then falls flat on its face

[Schrade]

Originally Posted by evildragon

mine backfires/misses ALWAYS on my initial takeoff from cold, then kicks into power. BUT, when coming to a complete stop when cold, it shakes like crazy as if it's ready to stall, but, when i actually stop, calm as anything... odd, does the shake when letting off the brake lightly too...

can't figure out the darn thing...

You got vacuum leak - betcha.

Loping idle is vacuum leak. 30 year old lawnmower, or a new car on the lot. If it sucks air where it ain't supposed to, it lopes.

Brick on pedal, block TB arm, anything to get a STEADY idle. 1200rpms or so... Feed starting fluid spray, A LITTLE AT A TIME, EVERYWHERE. RPM increase is the leak.

In a tough spot to pinpoint? Light a book of matches, blow it out while the heads are burnin', and feed the smoke to the leak.

Originally Posted by evildragon

I got no gauges or any tools to know how to check.

Vac leak test requires NO tools. Buy a multimeter tho'. $10 - you'll need it from now till you die, for house, car, etc., ...

Other stuff you can rent from the Advance/ Zone...

[mega420]

look at all vac lines including the one to the evap canister.

[Schrade]

Maybe don't LOOK at 'em; TEST 'em.

Loping idle is vacuum leak. 30 year old lawnmower, or a new car on the lot. If it sucks air where it ain't supposed to, it lopes.

Brick on pedal, block TB arm, anything to get a STEADY idle. 1200rpms or so... Feed starting fluid spray, A LITTLE AT A TIME, EVERYWHERE. RPM increase is the leak.

In a tough spot to pinpoint? Light a book of matches, blow it out while the heads are burnin', and feed the smoke to the leak.

[mega420]

thats what i mean lol probably got a small leak somewere