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PostPosted: Sun Mar 09, 2008 11:57 pm 
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Joined: Fri Feb 29, 2008 10:49 pm
Posts: 1547
Location: Salem, Oregon
Car Model: 1984 D100 Shorty Custom
Well, I have at last got the old beast running. I bought my 66 Valiant V200 for 300 bucks and trailered her home. After many weeks and curse works, and some absolutely awesome help from Dusteridiot, I was able to finally get her cranked up after sitting for 12 years.

There are 2 things that are weird, and I have thoughts on one, the other I don't know..

#1, The engine misfire is not caused by lack of spark or fuel to the cylinder. I know this because taking the plug out and laying it on the valve cover during cranking shows good spark.

I also know that it is getting fuel because after running the engine for just a short time, the plug is usually covered with gasoline.

So, in my opinion the only thing missing is compression. There are 2 options, the valves aren't sealing, and/or the rings are not sealing.

When running, if i blip the throttle, I get smoke spurts from the oil pan through the dippy, and out the valve cover vent. So this tells me that I have bad rings and/or rings that just aren't sealing due to lack of use.

The other thing would be valves/valve seats, but I really don't feel froggy enough to take it apart unless I am 100% sure that it needs to be done.

The same color smoke that I get from the oil pan and valve cover is coming out of the exhaust, and it smells like burning wood. Wood being burnt by say a router, not actually a fire. Friction is the word I am looking for.

I let it come to operating temperature, and nothing changes. I know its been sitting for some time now, and that pretty much nothing is sealing, so what is a good way to "break in" an old engine?

Its got a new timing set, water pump, ballast resistor, condenser, coil, and plugs.

Dusteridiot came to my house and set the cam and ignition timing for me, so I know that these 2 things are good. But as far as internal issues, I have no idea.

Thanks
~The other Rob~

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1984 D100 Shorty Custom
Certified Auto Appraiser - RevItUp Classic Appraisals
President - Cherry City Bombers CC
Part of Tyrde-Browne Racing


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PostPosted: Mon Mar 10, 2008 2:12 am 
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EFI Slant 6

Joined: Mon Nov 05, 2007 1:48 pm
Posts: 351
Location: PDX, OR
Car Model:
dont forget head gasket!compression and leak down test time. a leak down test will put pressurised air in the cyl. you can then grab your stethoscope and listen for air. exhaust pipe(exhaust valve), intake(intake valve),crankcase(rings/headgasket/random) sometimes you can see bubbles in radiator. we actualy got a chick in our auto program to listen in th P/S pump cuz thats why the car "had a misfire while turning" :lol: :roll:

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'72 Valiant DD for over a decade-225-Disc brakes, big T-bars, big Sway bars f/r, carter bbd/super six, GM HEI, 2- 12" subs in trunk, 1000w amp...
'77 cherokee cheif widetrack-360-33x12.5 tires-no lift. keeps driveway dry-project/backup DD/mudder


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PostPosted: Mon Mar 10, 2008 4:01 am 
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Turbo Slant 6

Joined: Thu Jul 13, 2006 8:05 pm
Posts: 770
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If that plug is wet then its gas fouled even if it does show to be sparking. When it gets under load it will not. Put a new plug in it and try a spare new plug wire with it, or atleast swap it wire the wire on a differnt cylinder to see if the dead cylinder moves with it. BUt new plug will be needed, not cleaning it.



Jess


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PostPosted: Mon Mar 10, 2008 7:02 am 
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Joined: Fri Feb 29, 2008 10:49 pm
Posts: 1547
Location: Salem, Oregon
Car Model: 1984 D100 Shorty Custom
I did actually replace that single wire to see if that would fix it... to no avail, and I installed a new plug into that cylinder, and that didnt fix it either.

I would try a leakdown test on it, but at the moment, I dont have a compression or cylinder leackage tester to do that with.

Thanks
~The Other Rob~

_________________
1984 D100 Shorty Custom
Certified Auto Appraiser - RevItUp Classic Appraisals
President - Cherry City Bombers CC
Part of Tyrde-Browne Racing


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PostPosted: Mon Mar 10, 2008 9:19 am 
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Joined: Mon Oct 14, 2002 4:32 pm
Posts: 4880
Location: Working in Silicon Valley, USA
Car Model:
Have you checked the valve lash?
DD


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PostPosted: Tue Mar 11, 2008 8:43 am 
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Joined: Fri Feb 29, 2008 10:49 pm
Posts: 1547
Location: Salem, Oregon
Car Model: 1984 D100 Shorty Custom
Should be able to check it in the next few days, I'll post what I get when they are measured.

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1984 D100 Shorty Custom
Certified Auto Appraiser - RevItUp Classic Appraisals
President - Cherry City Bombers CC
Part of Tyrde-Browne Racing


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PostPosted: Tue Mar 11, 2008 7:11 pm 
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Joined: Fri Feb 29, 2008 10:49 pm
Posts: 1547
Location: Salem, Oregon
Car Model: 1984 D100 Shorty Custom
So now I know for sure that it is a compression issue. So I tore the head off... all of the bolts holding the manifold came off ok, the studs on all but 2 came with the nuts, but that is better than breaking them all.

I took the head off, and not to my surprise, the #5 piston has a small chunk missing off the side of it. So thats why #5 is dead,

The #3 exhaust valve isnt round anymore, its wobbly shaped, and not sealing for beans, so thats why it didnt do well at all.

#1, I cant really figure out exactly what is wrong with it at them moment, but I'll find out when I clean everything up.

_________________
1984 D100 Shorty Custom
Certified Auto Appraiser - RevItUp Classic Appraisals
President - Cherry City Bombers CC
Part of Tyrde-Browne Racing


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