Car bogs out and hesitates

SmashThat · Feb 23rd, 2006, 01:23 PM

ok...my car is all back together and working. i drive it for a few minutes and its fine, but then it will bog out and loses power and it stays like that. anyone know why this could be. its a ka24e

**rogoman** · Feb 23rd, 2006, 03:35 PM

When it runs good, is the motor cold or is it fully warmed up?

SmashThat · Feb 24th, 2006, 01:06 AM

it runs good when its cold.

**rogoman** · Feb 24th, 2006, 03:33 PM

Quote:

Originally Posted by SmashThat

it runs good when its cold.

You may have a vacuum leak. To check for a vacuum leak, attach a vacuum gauge to a full vacuum source. A good place to connect to is the charcoal canister. There should be three hoses connecting the carbon canister. Two of the hoses go to a purge valve that's built into the canister. The second larger hose off the purge valve should be your vacuum line. With the motor fully warmed up, the reading at idle should be 18 - 20 InHg. At 3,000 RPM, it should be 21 InHg.

If readings are under 18 InHg, check the intake manifold nuts to make sure they are tight. Also check the intake plenum bellows at the throttle valve and at the MAF for cracks or loose clamps.