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Yes, no vacuum leaks

Thanks for the information. I have run Sea Foam through the intake, and fuel tank. I have also run Lucas fuel injector cleaner. However I haven't done any of that since I checked the fuel pressure. The check valve at the fuel pump seems the most likely culprit if I am not getting fuel in the...

new plug wires work great. Any info on fuel in the oil?

Thanks for the confirmation, I have the plug wires and will change them today if the ice lets up. I am still concerned with the fuel pressure fall off and fuel in the oil.

Hello. I am new to forums so please be patient. I have been searching this site and have learned quite a bit, but haven't found this problem yet. Stock '93 xlt starts and runs fine until put under a load and starts hesitating or missing. If I let off the accelerator or mash to kick down it...