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91 245 No Start after Heavy rain

Intake manifold vacuum check valve and leaky vacuum hose replaced. Also swapped out a newer FPRegulator due to gas odor in the vacuum line and set of used injectors with new o-rings just because. I think todays repairs made a big difference but have a lingering rough idle when compared to my good running 93 240.

Tomorrow I will replace the intake manifold gasket although I can see no evidence it is bad. Admittedly it is very hard to see the lower side of #3 and 4 cylinders.

Any other suggestions for a rough idle but otherwise seems to run fine are appreciated.

Thanks
Dan






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