1981 Chevy Van SURGING

Pull and plug the vacuum line going to the fuel pressure regulator and try it. Make sure you have vacuum at the line before you plug it. If this makes a difference, change the regulator.

[quote:97672efdf0="James R. Weizel"]Pull and plug the vacuum line going to the fuel pressure regulator and try it. Make sure you have vacuum at the line before you plug it. If this makes a difference, change the regulator.[/quote:97672efdf0]

OK, we'll give that a shot. Can you tell me where the FPR is? Then I am assuming that once we locate the FPR and unplug the vacuum line, we should start the engine to see if there is vacuum on the line. If so, then we plug the line and take the vehicle for a test drive.

I have to stand humble and corrected here. Your van has a quadrajet on it, not throttle body. Have you checked the fuel filter on the carb? It is located in the housing where the fuel line attaches. You need two wrenches. One to hold the filter housing, 1", and one to crack the fuel line loose 5/8". Otherwise the filter housing comes loose first and you twist off the fuel line.

[quote:d5cc4c5b5b="James R. Weizel"]I have to stand humble and corrected here. Your van has a quadrajet on it, not throttle body. Have you checked the fuel filter on the carb? It is located in the housing where the fuel line attaches. You need two wrenches. One to hold the filter housing, 1", and one to crack the fuel line loose 5/8". Otherwise the filter housing comes loose first and you twist off the fuel line.[/quote:d5cc4c5b5b]

We did what you suggested, found the filter and changed it. While there, we found the fuel line had a kink in it where it bends just before attaching to the carb. We cut the line because the filter assembly was not coming out, and we figured a short length of hose could be substituted at the bend. My son has been driving the van for several days now, and it appears the problem is fixed. Thank you.

I love it when a good plan comes together. Take care.