Definitely sounds like fuel to me. Funny story that relates... Inherited my father-in-law's '76 motor home. 454, 4 bbl, auto. He always complained about clogged filters. As I drove the big box from Brandon to Calgary, I had no trouble as long as the road was level. When I started climbing, the engine started missing. I stopped and put in the spare fuel filter. I put the new one in the same way the old one came out. The engine ran well for a while, then missed again. As I drove down the road, I considerred how the filter was installed... The closed end was facing the fuel line. Made no sense to me, so I stopped and turned the filter around. TOTALLY different vehicle. From struggling up hill at 30kmh to roaring up hill at 120. Guess I found out what the old man was complaining about...
Anyway, the symtoms sound similar....
Current fleet (subject to change w/o notice) \'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run. My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787. Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.
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