LuckyKenny Posted November 26, 2010 Share Posted November 26, 2010 Okay so about 3 weeks 600 miles ago, i changed out my plugs because one of them was fouled and it was missing like crazy It's been really cool and humid the last coupe of night here about 65 with 90% humidity. I don't know if it's the cam or if the car is actually missing but something is happening that i don't understand. I looked at videos of it idleing and it seems to be kind of doing the same thing tomorrow when i get up i"m going to check the plug that was fouled"s cynder any ideas? i know the cold will make it idle a little rough< but not completely warm right? it kind of does it when i"m going fourty just a tiny tiny bit too but nothing like it was PS its still burning oil pretty bad lol and i have a lead foot Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 26, 2010 Author Share Posted November 26, 2010 four months ago in sumer heat http://vimeo.com/13215818 Quote Link to comment Share on other sites More sharing options...
TN454Monte Posted November 26, 2010 Share Posted November 26, 2010 Q. Did the miss go away when you changed that plug and now it's back? Or did it not go away at all and you're trying to come up with another solution to the same problem? Reason I am asking is if you are fouling a plug heavily enough to induce a miss after just 600 miles, that "oil burning" is going to need attention...and soon. Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 26, 2010 Author Share Posted November 26, 2010 With those new plugs in there the car ran like it was brand new. Now for as long as i can remeber theres always been a tiny bit of miss in the idle, i was just wondering if it's the cam. It's a med eldbrock, not sure what exact model but i know for a fact it's no stock cam lol it runs really good compared to wen it was missing. I litterally couldn't powerbrake past 3k without it sputting all over the place. It's the piston rings on the 3rd cylnder, the plug was pretty bad. I'm afraid that it fouled out these ones too but i'm not sure yet. It's burning a quart about every 1000-1200 miles. It never smokes, ever. I think i'm just being paranoid lol Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 26, 2010 Author Share Posted November 26, 2010 almost like this I drove around for a week with if missing so bad to the point it was dropping 500 rpms ever 4 or 5 seconds. As SOON as i put those plugs in it just purred. I think any slight hiccup from a cold, carbed engine with a cam like that will sound like it's missing a little to a person that's in my situation I'll check it out and take a video tomorrow and you guys can be the judge lol i'm going to bed Quote Link to comment Share on other sites More sharing options...
black07ss Posted November 26, 2010 Share Posted November 26, 2010 A quart a 1000 used to be normal especially if there was a few thousand on the oil. I would check that plug again. It could be fouled again. The wire to that cylinder could be bad. You said it misses under a load it could be that wire. Oh and 65 degreese isn't cold!! Quote Link to comment Share on other sites More sharing options...
Gonzo Posted November 26, 2010 Share Posted November 26, 2010 I agree 65 isn't cold, 19 is. If you did just plugs it's possible the wires or cap and rotor need to be replaced. I have also seen new plugs cause a miss, if you can isolate the cyclinder swap that plug to a different cylinder and see if the miss follows, then you know it's a bad plug. Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 26, 2010 Author Share Posted November 26, 2010 the plug was gunked up real bad that's why it think it's piston rings Quote Link to comment Share on other sites More sharing options...
kc8oye Posted November 26, 2010 Share Posted November 26, 2010 kenny.. put a plug a couple of heat ranges hotter in that cylinder.. it will help stop it from fouling. also, adding an MSD 6 type unit will help keep it clean until you can address your rings. Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 27, 2010 Author Share Posted November 27, 2010 i put Delco r45t's in there Those are hotter burning plugs than regular delcos correct? I pretty much use delco everything Here's the bad plug and here's what the rest of them looked like all 7 looked like this there was about 8k on these plugs Quote Link to comment Share on other sites More sharing options...
Shadow Gray SS Posted November 27, 2010 Share Posted November 27, 2010 Could be valve seals. Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 27, 2010 Author Share Posted November 27, 2010 It doesn't smoke at all though Quote Link to comment Share on other sites More sharing options...
kc8oye Posted November 27, 2010 Share Posted November 27, 2010 that one cylinder you need to go higher yet on the heat range get a 46 or 47 if you can find them. Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 27, 2010 Author Share Posted November 27, 2010 I might have to order them online Quote Link to comment Share on other sites More sharing options...
72-CLASSIC_RIDE Posted November 27, 2010 Share Posted November 27, 2010 I had a 1976 Chev 350 CI SW that did that. Got so bad it would start popping thru the Carb. Clean the plugs & would run pretty well for awhile until plugs fouled again. Finally put a new GM TargetMaster 350 into her & no more problems. Engine was simply tired! Doug Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted November 27, 2010 Share Posted November 27, 2010 I aggree pull that one plug out and look at it to see if its fouled again. You could try one of those non foulers there a temp fix but it sounds like you may have a bad oil ring. Just a thought Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 27, 2010 Author Share Posted November 27, 2010 I'm starting to think it's the humidity mixed with the cold now. When i give it everything it's got it's a monster (chirping gears and everything!) just when it's curusing at 40 as low as it can go and when it's idling it hiccups a little bit, NOTHING like it used to be Quote Link to comment Share on other sites More sharing options...
TN454Monte Posted November 27, 2010 Share Posted November 27, 2010 It could be heat range of the plug, but judging from those pics I'm wondering why on only that cylinder? The rest seem to be doing fine. Since you say it cleared up after swapping those plugs out then came back; How many miles are on this engine? Like Jake mentioned you could have oil getting into the cylinder from a bad valve seal and that's causing this, on that particular hole, it could be a bad oil control ring on the piston etc. IMHO Something ain't right there... it seems like a lot of oil fouling on that single plug for only 600 miles of use. Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 27, 2010 Author Share Posted November 27, 2010 No that was before i changed them. Those plugs in those pictures are about 8-10k old. This engine is really sketchy to say the least It's supposedly been "stroked and rebuilt" When i got it it literally burned through 2 quarts on 50 miles I did a head job and rebuilt the carb, and general plugs, plug wires, hoses filters, you know...... logical stuff that needed to be done. He said he had it bored out and stroked and that it was a crate motor or something. He did this like 15k before i had it. I ran the numbers on the block and i couldn't really figure out what the hell i was doing or what they even meant, not to mention i lost the piece of paper i wrote them on. I had absolutely no idea what i was doing when i first got the car lol Not even a clue. I drove like a fool, literally went through a brand new set of fire hawks in 4 months. I didn't get around to checking that plug again but i did get to drive it. It's not missing or hesitating, there's just a 100 rpm drop that happens every 4 or 5 seconds. Idleing, crusing or power braking. I guess there are some things you really can't learn in a book lol. Try looking up carbed 350 mishaps on google, there's about 1.2 billion responses Quote Link to comment Share on other sites More sharing options...
TN454Monte Posted November 27, 2010 Share Posted November 27, 2010 Okay I guess I misunderstood you posts. Moving on .... So in effect what your are saying is you're wondering /concerned about what is causing the RPM to drop? Correct? If that is the case.. this RPM drop happening at speed you mentioned; is the car's speed constant and you're ONLY noticing a variance in what your tach reads? Or are you getting a lunging or slowing while trying to maintain a steady cruising speed? As far as RPM's dropping at idle, from your video, I honestly don't hear anything wrong, it just sounds like a happy SBC with a Mild cam to me...other wise known as "loping". Quote Link to comment Share on other sites More sharing options...
LuckyKenny Posted November 27, 2010 Author Share Posted November 27, 2010 It can lope at 40mph? I don't have a tach, just a really good ear Quote Link to comment Share on other sites More sharing options...
TN454Monte Posted November 27, 2010 Share Posted November 27, 2010 No, re-read my post.... I said the 'lope' was at idle Kenny...LOL No tach? So you're basing RPM drops on your "really good ear"? Ummm...lemmme think...Hmmmm Okay...try this. TURN THE TUNES UP. Problem solved! Yer Welcome. Quote Link to comment Share on other sites More sharing options...
kc8oye Posted November 27, 2010 Share Posted November 27, 2010 i agree with greg.. turn the radio up. Get a tach installed. put a hotter plug in that one hole, and give 'er hell. Quote Link to comment Share on other sites More sharing options...
CrazyDavey Posted November 28, 2010 Share Posted November 28, 2010 i agree with greg.. turn the radio up. Get a tach installed. put a hotter plug in that one hole, and give 'er hell. getting a hair cut would help too.... Quote Link to comment Share on other sites More sharing options...
MCfan Posted November 28, 2010 Share Posted November 28, 2010 Geez, Davey, you risk making us old guys seem intolerant! Weren't we all young and foolish once, too? Young people that like cars (especially Montes) more than twice their age show an unusual level of good taste and maturity. Quote Link to comment Share on other sites More sharing options...
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