89 vette misfires when at operating temperature |
Subject: 89 vette misfires when at operating temperature by damien89 on 2019/10/27 9:24:26 Hi, my 89 vette misfires when it reaches above 160'f +, it does it randomnly but it always does it, if i turn off the engine and restart it it works fine then after a few seconds it starts misfiring again. When it misfires the fuel pressure drops and if i give it a bit of throttle it jumps between 10-50 psi erratically, i was going to change the fuel pump but when its cold it works just fine, 40psi at idle and 47psi with load. Anyone have any tips what should i check? |