Spark plug Bosch or OEM FORD
That's what I am running in my wife's 94 and the idle in her car is real smooth...
I run the F6DTCs and have great results with them
I've run NGK BKR7E's, NGK BRK7IX's, Bosch FR7LDC, and Bosch F7LTCR's. Of all of these plugs I noticed the best performance out of the F7LTCR's.
I switched to a Bosche plug F7LTCR $4.41 a piece from rockauto.com. They last 4 times longer, and run much better than the BKR7 series.
Bosch FR8DS plugs are stock aba (2.0L 8v) plusgs and are awesome.
VAG engines seem to like their factory recommended Bosch plugs better than any other.
I have a full obd1 wiring harness from box out 1 brand new plugs(bosh)wires(bremi) cap&rotor(bosh) bucking is not as bad
everything else runs pretty poorly on our cars. especially the bosch +4's
I have bosh platnum on there and they look like crap after 2,000-3,000 miles.
My OEM coil was failing at the time, & I replaced the plugs from Bosch -+4's to NGK V-Powers (copper)so I'm sure the plugs contributed aswell. It always took afew extra cranks to start with the Bosch +4s......
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