Having trouble getting van to fire up

WHASTRO

MEMBER
1999 CHEVROLET ASTRO
245,000 MILES

Just did a complete tune up on the van wires, plugs, cap, rotor, fuel filter, air filter. When you get it running it idles fine, when you go full throttle it misfires through the intake. Did fuel pressure check at idle it is 52 psi when, you throttle up it goes to 58-60 psi. There is a strong odor of fuel when it is running. Put it on a scanner and there were no codes.

7 Replies

WRENCHTECH

MECHANIC
20,757 POSTS

Does the fuel pressure hold steady without dropping when the engine is shut off? That fuel pressure is low also.

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Wednesday, April 11th, 2012 AT 6:20 PM

MIKE H R

MECHANIC
3,094 POSTS

If there was no problem before you did the tune up recheck the firing order and check the wires to make sure they are on tight and on the cylinder correctly. At idle there is no stress on the engine and it will run smooth.

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Wednesday, April 11th, 2012 AT 6:22 PM

WHASTRO

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4 POSTS

Fuel pressure holds steady, triple checked firing order and wires. The problem I had was wife parked it we did not drive it for 4 days then have not been able to get it to run correctly since. I did replace the fuel pump a little over a year ago. Was wondering if the fuel pressure regulator could be messing up since it is running so rich.

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Wednesday, April 11th, 2012 AT 7:19 PM

WRENCHTECH