I bought a 89 2500 automatic 2 wheel drive 12 valve yesterday and I bought it knowing the injector pump was bad but it came with a new one. So I started messing with it today and decided to put everything the previous owner took apart back together just to make sure. So i hook everything back up and notice it has some weird fuel line stuff going on so I went to sort that out and ended up dropping the tank because the fuel was so bad. It looked like oil. Put a new fuel filter in it and new lift pump and dropped a fuel line into so nice clean new diesel and it's getting fuel to the injectors but just won't fire it will turn over all day long. What are some things I should check. I've never had a first gen before and my only other 12 valve never needed much work. Thank you


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