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Check your fuel pressure, make sure the pressure doesn't drop off (it will slowly overnight but not to zero) to quickly. If it does, it's an indication of a possible leaky injector, which would have a bad spray pattern.
How's the engine temp. going down the road? A stuck open t-stat will cause the engine to takelonger to warm up, & might not reach full operating temp.
How's the tune up parts? Do an inspection on the plugs, wires, vacuum hoses,& filters. Also a good time to check compression & see what vacuum the engine is making. If it has a maf senser, try cleaning it.
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