My DeLorean hasn't been driven for around a month and a half while I was in hospital, and it was running a bit rough before I went in there so I thought I'd give it a bit of a service when I got out before I first turned the key. I replaced the oil + oil filter, air filter, a bunch of vacuum hoses, the fuel injector seals, and did my best to clean the fuel injectors. This was done by having a bottle of Techron added to 1/4 tank of fuel, and manually jumping the RPM relay to flush it through the fuel injectors at full flow, repeated every few hours for a few days. At the start the spray patterns were a bit rough on a couple on them, but by the end they'd greatly improved! The spray volume comparison test is also now much better; to me this now looks "acceptable" but I'm sure other people on here can tell me if they think my fuel system needs more work.
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