Intake Manifold Leak

destrobeetle · Posted: Wed Jun 15, 2011 7:50 am Post subject: Intake Manifold Leak

Hello all,
1972 SB here with dual webbers and a 009. It was running crappy last week after a couple of freeway rides - stumbling at driving speed around 2500 RPMS. I heard ticking too so I decided to do a low level "tune up". Valve adjustment, timing, new fuel filters. In attempting to set the timing I broke my distributer clamp so I am waiting for a new one. Dang.

My question is - Is it normal for spark to be jumping out of the distributer base to the crank case when moving the distributor to time. I only notice it happening when moving. My gut is saying no good but I want to make sure before throwing parts at it. Condenser failing? bad distributer? Is this potentially causing my stumbling issue?

I should note that the PO said that the points and condenser were done last fall along with a slew of other things but I am not totally sure of this. Wires were supposedly done too but I think that of the 4 there are three different brands/types. Points do look good though I haven't had a chance to check the gap yet.

At some point I would like to replace the 009 with a vac advance but now is not that time.

Once again your help is appreciated!

BSQUARE · Posted: Wed Jun 15, 2011 9:24 am Post subject: Re: Spark down distributor Shaft

destrobeetle · Posted: Wed Jun 15, 2011 10:57 am Post subject:

Brett, thanks for the offer.
Aside from Friday night this weekend is really bad for me with Fathers day and all. We are also attending Rock the Garden on saturday. Present from my wife. Awesome one at that!

I'll take a look at the whole assembly tonight and see if I see anything obvious is amiss. If you had some time on Friday eve I would buy BEER!

Thanks again!

HRVW · Posted: Wed Jun 15, 2011 2:04 pm Post subject:

Now thats what I would call a helping hand from someone close by and FREE beer to boot.

BSQUARE · Posted: Wed Jun 15, 2011 7:43 pm Post subject:

I hate to pass up the chance to wrench on a VOLKSWAGEN TYPE 3 and drink BEER, but
I've already committed to helping a friend with his "volkswagen" (Rabbit) and drinking "beer" (probably PBR) this Friday
So, Friday's not going to work for me.
How does your Monday look?
_________________
1988 Ford Festiva L
1965 Honda 50 "Super Cub"
2016 Miami Sun Trike

destrobeetle · Posted: Wed Jun 15, 2011 9:00 pm Post subject:

I was actually monkeying around tonight in the dark and saw no wild spark. Not sure what that was about. I timed by listening instead of trying to figure out 30°BTDC a 3000 RPM with the light and things sound pretty good. Knock/tap is a lot less pronounced - maybe even gone? Can't test drive because of the damn distributor clamp so I'm not totally sure if my woes are cured. Popping seems to be gone in higher RPMs but I have a sneaking suspicion that it wasn't warm enough to produce the same results.

Brett, do you have a carb sync? Thinking that the carbs aren't doing exactly what they are supposed to be doing on top of timing, valves, etc.

Monday might work and if my part comes I might even be able to come to you with beer.

BSQUARE · Posted: Wed Jun 15, 2011 10:01 pm Post subject:

Hopefully, the errant spark was only a fluke. I'd investigate further, though. That's not really something you'd want to write off as a freak occurance.

I have a carb synch and stethoscope, tach/dwell meter, timing light, and A/F meter.

Timing by ear is a bad idea.
It may sound good and run well, but may be too far advanced.
I've blown one engine since I started driving aircooled VWs, and it was probably because I timed it by ear. Embarassed

The red mark in this photo is 30*BTDC, Your pulley may or may not have the same timing marks.

Image may have been reduced in size. Click image to view fullscreen.

_________________
1988 Ford Festiva L
1965 Honda 50 "Super Cub"
2016 Miami Sun Trike

destrobeetle · Posted: Thu Jun 16, 2011 6:15 am Post subject:

Good to know. I will reset with the light then.
Thanks for the pic. Mine does not have any other marks that I can see aside from the standard. With the light I was putting it a little more than an inch the other direction of the timing marks. Doh!

BSQUARE · Posted: Thu Jun 16, 2011 7:26 am Post subject:

destrobeetle · Posted: Fri Jun 17, 2011 4:31 pm Post subject: Intake Manifold Leak

I think I have more going on I guess. I tried timing last night and I am getting intermittent pops with it at 3000 rpm and timed to the mark that you showed in the above photo. I sprayed starting fluid around the intake mani and the rpms increase on both sides. The air cleaners that I have on there have ports on the bottom that look like are supposed to be hooked up to something. They are just open. I guess Im not totally sure if starting fluid is rising up and getting sucked up in those. I'm going to block those off and try again.

Can I tighten the manifold bolts without removing the carb and linkage assembly? Looks pretty darn tight in there?

Mike Fisher · Posted: Fri Jun 17, 2011 6:07 pm Post subject:

Since the car is brand new to you I'd recommend taking the carburetors and manifolds off this time! You might have the wrong metal sandwich style gaskets that will always leak. Making new gaskets out of cereal boxes is the recommended fix for manifold leaks. Good time to put in new NGK or Bosch spark plugs too.
_________________
https://imgur.com/user/FisherSquareback/posts
69 FI/AT square Daily Driver
66 sunroof,67,70,71,71,71AT,72,72AT,73 Parts
two 57 oval ragtops sold
'68 Karmann Ghia sold

Society is like stew. If you don't keep it stirred up you end up with a lot of scum on the top! - Russ_Wolfe/Edward Abbey

destrobeetle · Posted: Fri Jun 17, 2011 6:15 pm Post subject:

Thanks Mike. I may just do that. The only thing that sucks about living in Minnesota is the season to drive is soooo short! I feel summer slowly slipping away as the square sits in my garage! Bummer.

I guess I've read a couple of posts about cereal box gaskets. Works hey?

Adriel Rowley · Posted: Fri Jun 17, 2011 6:51 pm Post subject:

blankmange · Posted: Fri Jun 17, 2011 8:20 pm Post subject:


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