I have a 86 gt It's maf converted. Mods and engine combo are in my signature. I've been chasing a misfire for 3 weeks when I've had time to look at it. The tps sensor let go. So I replaced and reset voltage. Also just replaced bank one o2 sensor. Now I have a misfire. I have tried different injectors, maf electronic for my c&l, spark plugs, cap and rotor, a new parts store distributer which made it worse so I put other back in, new plug wires which did actually help but still has a skip. All cylinders have 135-155 psi of compression. I took upper intake and valve covers off and turned over with the starter all rockers are moving and oil is coming through pushrods. All cylinders have spark if I put a timing light on each wire. I have no codes other than egr stuff witch is removed. The cylinder balance test said cyl 4 not contributing then it stalled and I didn't finish the test. I do have coolant leak at the front of intake by cylinder 5 doesn't rev up with brakecleaner or propane though. What should I try next. I just don't want to through parts at it anymore. Want to try another distributer but won't get another cheap one I got 2 bad ines from advance auto so will only buy a msd don't want to drop $200 and not fix the problem.
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