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Message: [QUOTE="Denver, post: 1549744, member: 608"] I have a no start problem on my 7.3. Truck is a 2002 F250 7.3 4R100. 268K miles and a West coast truck. Valve covers never been off but I know the injectors and HPOP are good. Anyways it has a no start condition. Not a hard start, but no start as in injectors not firing. Turns over just like normal but doesn't start. A note and some recent history. It's always had a longer start than other 7.3's I've been around. Last Saturday I remove the driver side battery to measure the intercooler end. When I fired the truck up I didn't wait for the dash to complete its gauge sweep cycle after the battery removal. Same day I sprayed simple green on the intake Y and surrounding areas because I'm going to change the CAC and valley boots and lightly hosed off the dirt and oil. I first then started the truck the next day and it started fine. Morning after that it's 38* out and first crank it didn't start. Second crank it fired up. Got to work and 8 hours later and now mid 70's weather no start, just turn over. Replaced the CPS with a black and same symptoms. Wiggled some wires and 10 minutes later it fired up like normal. 3 days it's running fine and normal until this morning. Mid 40's this morning and no start. Put a volt meter on the batteries and key on, engine off it shows 12.5 volts then drops to 11.7 volts for GP. Turn the engine over it drops to 11.4 to 11.1. Did about 30 seconds of cranking in cycles then it went to 8 volts. Later that day and no charging the batteries, I tried starting it again and got the same voltage readings. Then the batteries got weak again. Tried jump starting it from another 7.3 and no start. Oil pressure is good. ICP is dry and good and wouldn't start unplugged. Fuel pressure is good. Fuses are good and relays are good. Only thing I can think of is the IDM or there is a large current draw on the batteries. The batteries are charging at the moment separately and will try again in the morning. Years ago I had a starter go bad from washing oil off it and it caused it to pull a lot of current. The problem is an intermitted problem. It's a start or not going to start. It's not a hard start condition. What else should I look at? [/QUOTE]