Sapper 157 Posted July 26, 2016 Share Posted July 26, 2016 Okay so I got it to start, but I have to rev it to about 1500-2000 to keep it alive, if I let it get below that then it dies. The tach is also super jumpy even at that high rpm. So heres what I am thinking: I could have adjusted the valves incorrectly, I will recheck that I could have put a vacuum tube in a wrong port... I don't think i did but I will recheck again The carburetor I'm sure is out of adjustment, but I don't think it would cause this much of an issue Could be out of timing? It cannot be a misplaced spark plug wire... I rechecked those about 30 times Other thoughts or advice? Quote Link to comment Share on other sites More sharing options...
MR_Loyale Posted July 26, 2016 Share Posted July 26, 2016 Did you happen to take any photos of the vacuum tube layout before you took it apart? Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 26, 2016 Author Share Posted July 26, 2016 i took a few photos and I marked EVERYTHING and made sure that everything was reconnected to its proper port... but like I said I could have missed something, so I will go over the photos again Quote Link to comment Share on other sites More sharing options...
ferp420 Posted July 26, 2016 Share Posted July 26, 2016 it kinda sounds like the distributer is 180° out Quote Link to comment Share on other sites More sharing options...
MR_Loyale Posted July 27, 2016 Share Posted July 27, 2016 If this was an ea82 I would suggest the iac. Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 27, 2016 Author Share Posted July 27, 2016 it kinda sounds like the distributer is 180° out How would this have gotten messed up?? I didnt touch the disty except for a new cap and rotor. How would I tell if its 180 out of wack? Quote Link to comment Share on other sites More sharing options...
MR_Loyale Posted July 27, 2016 Share Posted July 27, 2016 Got a timing light? There should be a VECI label on the hood stating the parameters for timing. Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 27, 2016 Author Share Posted July 27, 2016 Got a timing light? There should be a VECI label on the hood stating the parameters for timing. Nope, but I can probably get a hold of one Quote Link to comment Share on other sites More sharing options...
silverhelme Posted July 27, 2016 Share Posted July 27, 2016 Did you do a rebuild or a tuneup? I've never done a rebuild that I didn't remove the distributor. It's almost impossible not to pull it and split the case. Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 27, 2016 Author Share Posted July 27, 2016 More like a tune up... I resealed a bunch of stuff but I didnt open the crank case at all so there was no need to take off the disty. Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 27, 2016 Author Share Posted July 27, 2016 Okay so I am about to go out and check the timing with a timing light... Lets just pray that this is what is wrong... I am sooooo done with this car Quote Link to comment Share on other sites More sharing options...
ferp420 Posted July 27, 2016 Share Posted July 27, 2016 Maybe the cap is on backwards or the wires are on wrong just guessing Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 28, 2016 Author Share Posted July 28, 2016 So I hit it with the timing gun, and it was a tad out of timing, but not bad at all... I did find that for some reason I have a misfire on Cylinder #3. It does have spark, it is just weak and yellow instead of bright white. So that is probably my problem. My NGK wires are only a few months old, and I did an omes test and all of them checked out. The coil is within the specified omes. I tried replacing the plug with a brand new Champion plug I happened to have on hand, and it didnt effect it at all so my plan is this: Get a new NGK plug and see if that helps.... If it doesnt... I have no idea what could be causing this. Maybe a wire grounding out somewhere?? Quote Link to comment Share on other sites More sharing options...
turbosubarubrat Posted July 28, 2016 Share Posted July 28, 2016 I would swap that plug wire to another spot on the cap to see if the problem follows that plug wire. If it doesn't possibly high resistance on the cap on that one contact? Seems unlikely since you said it was new. My other thought was intermittent spark because of a going out ignition module or weak coil. Quote Link to comment Share on other sites More sharing options...
Uncle Ed Posted July 28, 2016 Share Posted July 28, 2016 Remember to check the gap on your plugs before you install them. Plugs/parts can be bad even if they are brand new! I assume that its an EA81, as you said you adjusted the valves. If the tach is jumpy you most likely have a broken/loose wire, or an ignition module gone (your in limp home mode now). Ed Quote Link to comment Share on other sites More sharing options...
silverhelme Posted July 28, 2016 Share Posted July 28, 2016 You might not want to get to focused on the ignition when it could be a carb problem. When I worked in shops I had one that gave me the same symptoms but it tuned out to be the idle cut off valve had gone bad while I was doing a tune up on the car. It would run if I kept it over about 1200 rpm because it was tipped into the main fuel at that time but as soon as it tried to idle it died. Quote Link to comment Share on other sites More sharing options...
MR_Loyale Posted July 28, 2016 Share Posted July 28, 2016 Is it a new cap and rotor? Quote Link to comment Share on other sites More sharing options...
turbosubarubrat Posted July 28, 2016 Share Posted July 28, 2016 You might not want to get to focused on the ignition when it could be a carb problem. When I worked in shops I had one that gave me the same symptoms but it tuned out to be the idle cut off valve had gone bad while I was doing a tune up on the car. It would run if I kept it over about 1200 rpm because it was tipped into the main fuel at that time but as soon as it tried to idle it died. To get past that most people on here just remove the spring and needle. Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 28, 2016 Author Share Posted July 28, 2016 I would swap that plug wire to another spot on the cap to see if the problem follows that plug wire. If it doesn't possibly high resistance on the cap on that one contact? Seems unlikely since you said it was new. My other thought was intermittent spark because of a going out ignition module or weak coil. Okay ill try that next You might not want to get to focused on the ignition when it could be a carb problem. When I worked in shops I had one that gave me the same symptoms but it tuned out to be the idle cut off valve had gone bad while I was doing a tune up on the car. It would run if I kept it over about 1200 rpm because it was tipped into the main fuel at that time but as soon as it tried to idle it died. Cant be the carb. Im sure it is contributing to the jumby tach but not to my misfire. I have all the idle stuff adjusted almost to spec. I can hear the piston clicking back and forth because its not getting its fuel lit plus I pulled the plug and watched it spark and it was weak and yellow instead of white on the number 3 cylinder, so it is definitely an ignition issue. Is it a new cap and rotor? Yup. Brand new. Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted July 31, 2016 Author Share Posted July 31, 2016 I replaced the plug with a brand new NGK, and I also ordered some new NGK wires. I tried switching the wire around, but even with the brand new plug, I still have a misfire on #3. I am thinking that the wire that runs from the coil to the cap could possibly be the culprit, because when I replaced my wires with the new NGK several months ago, for some reason the NGK wire that was supposed to go to the coil/cap was about half as long as it should have been to fit, so I just had to reuse my old off brand wire. I am also thinking that possibly the wires from the disty to the coil could be to blame, but im not sure about that. I might try replacing them just for kicks. I am running out of options here. I must have this car drivable in two weeks so I can return to college for next semester... but im running out of patience and time. Is there anything else that could possibly cause this misfire?? Quote Link to comment Share on other sites More sharing options...
ferp420 Posted July 31, 2016 Share Posted July 31, 2016 Check your ground wires from the motor to the body and body to battery and motor to battery you can use jumper cables for a quick test hook both leads on one end to the block and one to battery - and other to the body see if it helps I had lost a ground out wheelin and it acked like that i over looked it so many times I even grabbed my extra ecu and dissy luckily I found the ground before I tore in to it Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted August 1, 2016 Author Share Posted August 1, 2016 Check your ground wires from the motor to the body and body to battery and motor to battery you can use jumper cables for a quick test hook both leads on one end to the block and one to battery - and other to the body see if it helps I had lost a ground out wheelin and it acked like that i over looked it so many times I even grabbed my extra ecu and dissy luckily I found the ground before I tore in to it So I put the battery cables on the negative batt. terminal, and on the block to test, correct? Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted August 1, 2016 Author Share Posted August 1, 2016 UPDATE: I may have failed to mention earlier, but the number 3 cylinder has a constant "clicking" when I do get it to run... One of my buddies says it is the piston failing to ignite, which I would agree with since it does not sound like a valve click (plus those are adjusted so it couldnt be them) Im not sure if that points to anything imparticular, but that is one of the symptoms I am experiancing. I am begining to think this may not be an igintion issue but a compression or fuel delivery issue... which is strange because all the other cylinders are getting fuel, and the carb seems to be trying to do its best to keep the darn thing running. Quote Link to comment Share on other sites More sharing options...
Dee2 Posted August 1, 2016 Share Posted August 1, 2016 You say there is a misfire on cylinder 3 and the spark plug is not firing correctly. I recently had a misfire problem on my truck and found the plug had carbon tracks on the outside. This can cause a misfire and requires replacing the plug and wire. Check the plug carefully and see if there is any black sooty carbon tracking on the outside of the plug. If it isn't the plug, then misfires can also be caused by compression problems, valve problems. I would start with a vacuum test to see what I could learn. If something is revealed then follow up on it. If nothing is revealed then do the compression checks and see if the problem is cylinder or valve related or neither. Quote Link to comment Share on other sites More sharing options...
Sapper 157 Posted August 1, 2016 Author Share Posted August 1, 2016 (edited) You say there is a misfire on cylinder 3 and the spark plug is not firing correctly. I recently had a misfire problem on my truck and found the plug had carbon tracks on the outside. This can cause a misfire and requires replacing the plug and wire. Check the plug carefully and see if there is any black sooty carbon tracking on the outside of the plug. If it isn't the plug, then misfires can also be caused by compression problems, valve problems. I would start with a vacuum test to see what I could learn. If something is revealed then follow up on it. If nothing is revealed then do the compression checks and see if the problem is cylinder or valve related or neither. Now im thinking it is either compression or fuel, because I put a brand new spark plug (NGK) in and moved the suspect wire to another plug and it is still having issues on #3... so far for ignition I have tried replacing the Coil Spark plugs Wires Cap Rotor I checked timing rechecked valves... three times checked the wires leading from cap to coil, and they are working Next I think I will check the grounds and see if there is something wrong there... if not, maybe there is a blockage in the intake manifold?? Maybe I accidental dropped a nut or bolt in it and it is blocking the fuel flow? Edited August 1, 2016 by Sapper 157 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.