1970 Torino no spark
Printed From: The Ford Torino Page
Category: Model Specific Forum
Forum Name: 1970-1971 Ford and Mercury
Forum Description: Technical discussion for 1970-1971 Ford and Mercury
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=13841
Printed Date: 26-March-2026 at 3:05PM
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: 1970 Torino no spark
Posted By: Jontorino
Subject: 1970 Torino no spark
Date Posted: 17-May-2015 at 11:08PM
| Hi, I have recently buy a 1970 Ford Torino with a stock 302. The problem I have is that in the four cylinders of the left i have no Spark. I have test the wires with a tachometer and they don´t have any voltage. Don´t know what it could be. Thank you for uour replies! |
Replies:
Posted By: Big Bird
Date Posted: 18-May-2015 at 1:50PM
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You only get spark in the cylinders on the right? Check for spark at your distributor cap, look inside and see if the contacts are corroded. Weird that it's only one side. ------------- "What we do in full frontal view, is more honest than your cleaned-up mind." Randy 1979 T-Bird 2005 F-150 STX RCSB 4.6, 3.55 LSD How the Heck does a REGULAR CAB SHORTBED weigh over 5200 pounds? |
Posted By: 75GranMan
Date Posted: 18-May-2015 at 1:54PM
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I believe you may have tested the wires for resistance with an ohm meter? I'm guessing that you may have a faulty set of spark plug wires. First thing I would do is remove a spark plug wire and hold it close to an engine ground while cranking the engine over. if you see spark jump to ground you have spark on the wire.if no spark, try spraying the wire with WD40 and rechecking for spark again,if spark is present after spraying with WD40, your plug wires are faulty. ------------- John 75Gran Torino 4spd  |
Posted By: rough_72
Date Posted: 18-May-2015 at 2:00PM
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Just couriouse 75granman how does spraying them with wd40 do?? I have never heard this test....... Make sure wires are all the way pushed on to the plugs. I've had some that feel like they are pushed on but they are not on. ------------- AJ McKenna |
Posted By: californiajohnny
Date Posted: 18-May-2015 at 2:21PM
have a neighbor that you don't like, hold onto the end of the wire while cranking the engine, if he jumps and starts cussing, you have spark!  sounds like bad plug wires, but all 4 on the same side??? check the cap too, that is strange!!! ------------- JOHN 74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
Posted By: Jontorino
Date Posted: 18-May-2015 at 9:30PM
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Today I am going to open the distributor to check inside... I don´t know how to check the resistance, I check it with a manual tachometer, put in eache wire in the tach... the four wires on the pilot side didn´t make any signal. |
Posted By: jccpd
Date Posted: 19-May-2015 at 8:51AM
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How could it be all on one side? I could kinda see if half of the cap was not touching the rotor, but the firing order is relatively random (1-5-4-2-6-3-7-8-?) so it would have to be skipping specific ones to have one half of the engine not firing. I agree with some of the above that it is more likely the wires (but why on one side?) or in fact they are all firing but the author is not reading the meter right.
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Posted By: jccpd
Date Posted: 19-May-2015 at 8:52AM
| Is the car actually running? With four cylinders out, it should not be running. |
Posted By: Jontorino
Date Posted: 19-May-2015 at 9:24PM
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Well yesterday I check every wire with a timing light and all of them had spark. Probably the tachometer I used was bad. The problem I have is that the car starts and idles right, but runs rough. It starts doing this few days ago, I have run well with the car until last week. Can it be the condenser or the points? I have no touch the distributor, so I supose the timing is good. |
Posted By: 75GranMan
Date Posted: 20-May-2015 at 1:36PM
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possible jumped timing chain. The original plastic style cam gears would start to fall apart allowing the chain to jump. check timing chain play and check the cam timing first. ------------- John 75Gran Torino 4spd |
Posted By: Big Bird
Date Posted: 20-May-2015 at 3:04PM
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Start with the basics. Check cap and rotor, points and condenser, plugs and wires. Check the ground wire and battery terminals for corrosion and good contact. ------------- "What we do in full frontal view, is more honest than your cleaned-up mind." Randy 1979 T-Bird 2005 F-150 STX RCSB 4.6, 3.55 LSD How the Heck does a REGULAR CAB SHORTBED weigh over 5200 pounds? |