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Couple of engine problems.
https://www.slantsix.org/forum/viewtopic.php?t=32827		 Page 1 of 1
Author:  64drtGt [ Mon Dec 15, 2008 2:59 pm ]
Post subject:  Couple of engine problems.
Well I finally got my dart back and I'm a little annoyed if my friend had worked on it all would have been fine, but he had one of his employees work on it and a few things still are not right. All the things I had done were stuff me and my dad could do but just didn't have time.

1st the car was running poorly overall even after a tune up, the car had alot of hesitation and would stall out if you matted it at all you had to easy down on the gas. So I had them replacing a ford manifold gasket some dipstick had used to the correct mopar gasket in this we found that a some of the bolts were just siliconed in. I also had them rebuild my holly 1920.

Well they got all this done and i got it home and drove it to school and on the way home it died and would sit for abit and then run again. So I took it back on his rollback and told him that the gas tank was full of crap and it needed to be dropped and cleaned. They didn't listen to me and after changing points,condenser, and fuel pump they still had to drop the tank.

So now the car is kinda running better but i noticed i had a horrible exhaust leak so when i checked it none of the bolts were really tight and one still won't tighten up. This is no biggie i can fix this.

Sorry about the long read.

Now the important part. The car will still die almost every time if you are not paying attention and give it a tad to much gas from idle this has resulted in me doing a mini brake stand before I pull out so it doesn't die as I get in front of traffic. Me and my dad checked the timing and even set as low as it will go its running about 10 to 12 degrees before TDC. Thats when I also noticed that the carburator is always pulling vacuum on the advance. Thats not right is it?

Any advice as to what I need to next will be taken with open ears and ready hands because I will be working on the car from now on.
Author:  63d100sixer [ Mon Dec 15, 2008 3:22 pm ]
Post subject:  Re: Couple of engine problems.
Quote:
So now the car is kinda running better but i noticed i had a horrible exhaust leak so when i checked it none of the bolts were really tight and one still wont tighten up. This is no biggie i can fix this.
i think that sums it up right there. You may be sucking air from the intake, leaning out the gas, making it stall. Thats what happened on my 82 diplomat. Had me stumped for days, and cost me almost 500 bux fixing things that I thought it might have been. Of course that lean burn just sucked anyways :roll:
Author:  Reed [ Mon Dec 15, 2008 3:29 pm ]
Post subject: 
Sounds like you have a large vacuum leak. Time to check the torque on all the intake and exhaust manifold studs and nuts, as well as the integrity of the choke pulloff diaphragm and the distributor vacuum advance pod. Also, make sure that your vacum hoses are routed properly and aren't cracked.

Next step would be a valve lash.

You also should check the gap on the points.

I don't mean to be rude or insulting, but your post is hard to understand. Please try to use correct punctuation. It makes giving you good advice much easier.
Author:  SlantSixDan [ Mon Dec 15, 2008 3:41 pm ]
Post subject: 
Wow, sounds like this project is really making problems. They're almost certainly not as big and difficult as they must seem. It shouldn't be too hard to get the car running well. It sounds like many of the problems are down to poor quality repair work (untight manifold hardware, etc.).
The very first thing to do is to get the books described in this thread and start reading.

You will probably want to redo the manifold gasket replacement job with correct hardware and the good gaskets. Tune-up parts and technique suggestions in this thread. Here is the Holley 1920 operation and repair manual (pdf). And don't forget this engine needs periodic valve adjustment.

I will also echo Reed's request: Please take the extra minute or two to create your post with reasonable punctuation and capitalisation, and separate your thoughts into paragraphs. That will make your post much easier to read, which improves your chances of getting a good number of responses — many people will tend to give up on trying to read a tough-to-read post.
Author:  theslantingsix [ Mon Dec 15, 2008 6:24 pm ]
Post subject: 
yea its a vaccume leak of some kind my 1920 was being a turd monkey like yours and i was missing half the carb and had some vaccume leaks and paly with your idel speed i got it ideling at 1200 rpm and it dont cut off no more burns gas and idels loud but its awsome
Author:  64drtGt [ Mon Dec 15, 2008 6:27 pm ]
Post subject: 
Also what about it constantly drawing vacuum to the advance shouldn't it only pull vacuum at like over 1/2 throttle?
Author:  Dart270 [ Mon Dec 15, 2008 8:49 pm ]
Post subject: 
You may want to check the valve lash to make sure they didn't set it to GM junk specs or something. Tight valves can make for really crappy idle/low speed running.

Lou
Author:  SlantSixDan [ Mon Dec 15, 2008 9:07 pm ]
Post subject: 
And yes, correct, you should not have spark advance vacuum at idle.
Author:  64drtGt [ Tue Dec 16, 2008 9:52 am ]
Post subject: 
Quote:
You may want to check the valve lash to make sure they didn't set it to GM junk specs or something. Tight valves can make for really crappy idle/low speed running.

Lou
They didint mess with the valves I adjusted them to .010 intake and .020 exhaust

edited for typo
Author:  xjarhead [ Tue Dec 16, 2008 11:03 am ]
Post subject: 
I had same problems you are having when I tryed useing manifold vacuum for vacuum advance instead of ported. You do not want vacuum advance at Idle. changeing that may fix your problem.

Thanks Dave
Author:  Doc [ Tue Dec 16, 2008 11:14 am ]
Post subject: 
Quote:
Quote:
You may want to check the valve lash to make sure they didn't set it to GM junk specs or something. Tight valves can make for really crappy idle/low speed running.

Lou
They didn't mess with the valves, I adjusted them to .10 intake and .20 exhaust
You mean .010 & .020... right?
DD
Author:  64drtGt [ Tue Dec 16, 2008 1:26 pm ]
Post subject: 
Quote:
Quote:
Quote:
You may want to check the valve lash to make sure they didn't set it to GM junk specs or something. Tight valves can make for really crappy idle/low speed running.

Lou
They didn't mess with the valves, I adjusted them to .10 intake and .20 exhaust
You mean .010 & .020... right?
DD
yes my bad i was half asleep when I typed that.
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