having trouble getting van to fire up

1999 CHEVROLET ASTRO
245,000 MILES
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WHASTRO
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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.
Apr 11, 2012 at 6:01 PM
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WRENCHTECH
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Does the fuel pressure hold steady without dropping when the engine is shut off? That fuel pressure is low also.
Apr 11, 2012 at 6:20 PM
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MIKE H R
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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.
Apr 11, 2012 at 6:22 PM
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WHASTRO
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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.
Apr 11, 2012 at 7:19 PM
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WRENCHTECH
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The fuel pressure is still too low.

What makes you think it's running too rich?
Apr 11, 2012 at 7:51 PM
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WHASTRO
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the smell it will burn your eyes if your near it.
Apr 11, 2012 at 7:56 PM
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WRENCHTECH
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That doesn't mean anything. You're not setting any rich codes so you need to look at the data stream to find out what's going on.
Apr 11, 2012 at 7:59 PM
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WHASTRO
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data stream? it also smells flooded with the breather box off. Would low psi on the pump do this?
Apr 11, 2012 at 8:07 PM
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