91 Pickup No start No spark
02-23-2018, 08:42 PM
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91 Pickup No start No spark
So on my way to work my truck randomly bogged down and died I then had it towed home. When I got it home I started at looking for spark. I checked for voltage at the ignitor, voltage is good, checked for voltage at the coil, voltage is good. I ohmed out the coil and .6 ohms (normal) then I ohmed out the distributor pickups and they were out of whack so I replaced the distributor. New distributor still no spark, I ohmed out the new distributor and was still getting in the low 400 ohm range. My question is, is there something that is making the ohm readings on the distributor read this way or did I get a bad distributor? Is it possible that my issue is elsewhere?
Last edited by Njonas126; 02-23-2018 at 08:44 PM.
02-23-2018, 10:23 PM
#2
So on my way to work my truck randomly bogged down and died I then had it towed home. When I got it home I started at looking for spark. I checked for voltage at the ignitor, voltage is good, checked for voltage at the coil, voltage is good. I ohmed out the coil and .6 ohms (normal) then I ohmed out the distributor pickups and they were out of whack so I replaced the distributor. New distributor still no spark, I ohmed out the new distributor and was still getting in the low 400 ohm range. My question is, is there something that is making the ohm readings on the distributor read this way or did I get a bad distributor? Is it possible that my issue is elsewhere?
1: it is a good idea to quote the FSM specs when you do an electrical check. For two reasons it gives others less trouble having to verify what you should have, and also some of the books have misprints in some sections that they won't in others so someone can easily spot 'that is the wrong spec".
2: Sometimes parts make.it passed quality control that shouldn't. Also sometimes bad parts are returned and put back on the shelf for resale. It is always a good use of time to inspect electronic parts before you put them on.
Ok make it three points, how certain are you of the reading you measured. Did you have fluctuations? Was it a bad connection? Maybe time to change your meter battery? Test a known source(or two), I keep a few high precision (<1% error) resistors in my meter case for this.
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