Thread: t.b.i. problems

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Originally posted by HWORRELL
I read lots of good advice on this one,But have not seen any suggestions about the basics.......Fuel preasure..... I know at the start it says its got a new fuel pump but nowhere have I seen the fuel preasure & volume readings... Those TBI's are pretty reliable,but I have seen the preasure regulators go bad pretty often.. and when ya say she backfires on accel that tells me she's goin lean....
Try this ... find the smaller of the 2 fuel lines off the TBI follow it down till ya find some neoprene hose and crimp that bugger shut.. now go drive it and if it runs o.k. I would then start looking at fuel preasure it should be 9-13 lbs (hafta have the proper tester and ya hook it up at the fuel filter) no specs on dead head preasure ( return line blocked) but I would expect to see 25-30 lbs If the pumps capable of that,and she runs good with the return line blocked,put a new filter and preasure regulator on it,I would also put a new (Bosch or ACDelco)oxygen sensor on it if yours has over 30,000 miles on it..... Hope this helps

you must have jumped right over my last post HWORRELL.