[69GPModJ]

Anyone know what to use to create smoke so a vacuum leak can be traced?

I'm thinking of getting some dry ice to see if that works.

[69GPModJ]

Bummer.

Maybe I'll switch dates.

[Big Mike]

I don't believe it could be warped unless you dropped it or torqued it down incorrectly nad had something keeping it from seating. Remove the manifold, clean all gasket surfaces well, use a good gasket like Fel-Pro brand and be sure the bolts are not bottoming out before they exert pressure on the intake. I always slightly snug the bolts to the head, then torque to bolt that pulls the manifold forward and seals that "O" ring to the timing cover. Then I torque the other bolts starting from the center bolts outward.

[69GPModJ]

Anyone know what to use to create smoke so a vacuum leak can be traced?

I'm thinking of getting some dry ice to see if that works.

[69GPModJ]

I think someone here--probably George Kujanski--advised me to use a piece of hose to find the vacuum leak. In any event, Jim Hand suggested it today, which reminded me again of my stethoscope.

It did the trick! I've got a major vacuum leak at the rear of my Torker II on the driver's side. Actually, it almost sucked my eardrums outside my head when I put the tip of the stethoscope hose over the leak.

So, off comes the manifold--probably this weekend.

Question: Is it likely my manifold warped? I don't have that many miles on it and the engine has never overheated.

If the manifold is warped, does that mean I have to buy a new one or can it be repaired?

[Jim Hand]

Kerry,
Get several feet of small rubber hose/tubing. Hold one end to your ear and pass the other over every possible source of vacuum leak with the engine running. You will hear it if there is one. And a small hose will reach under the intake to check there also. To calibrate the leak detecting "system", pass the end over the carb and listen to the air moving into it.

Jim Hand

[george kujanski]

WD-40 works, too.

George

[69GPModJ]

I suspect something hard to get at because I haven't been able to find it in the usual places--hoses, threaded connections, carb, et cetera. I'm going to have a go tonight and see if I can find it.

[69GPModJ]

Jagg:

I'll look into that as well.

[Doug Christie]

So then you have no excuse for not comeing over to Mission for a Friday nite Street Legal and stay for racing on the weekend.

[69GPModJ]

I really want to attend but every time I leave Vancouver Island it costs me an extra $120 or so in gas and ferry tickets. Also, Old Tyme Drags and the Qualicum Car show (1,000+ cars) conflict 'cause they're on the same weekend. So, I'm want'n to but don't know yet.

[69GPModJ]

You're right. I was reading "Rosedale" but thinking "Rossland" for some reason. You're actually just a few miles east of where my Dad and sister are living--in Mission.

[69GPModJ]

Can't make it this weekend. Maybe the first weekend of August for the Old Time Drags.

[69GPModJ]

Hi Jim:

Thanks for the tip! I've got a mechanic's stethoscope. I'll take the end off and simply listen with the tube instead of the end.

[Doug Christie]

Only road racing that weekend and no Friday nite S/L.

Mission Raceway: http://www.missionraceway.com

[connman]

to use the butane torch it take a fitting that ya'll can put a hose on it so it will get close to the leak. What kind of vac leak do ya'll suspect? hard to find one "under" the intake sometimes.

DRIVE IT LIKE YA'LL STOLE IT!

[69GPModJ]

Rosedale to Victoria--that would be a bit of a trip.

[Doug Christie]

Thank goodness you found it. I was about to jump on a ferry (not that kind)and come help you. Unfortunately they keep breaking down.

I had a Torker that leaked and used silicone to get it to seal. A machine shop should be able to tell whether it's worped or not.

[69GPModJ]

Hey Brian:

The problem developed with the vacuum advance blocked off. I've checked idle with the vacuum modulator blocked off too and that doesn't seem to be the problem.

A friend of mine brought one of those mini foggers you see in indoor fountains. I'll see if that's any use while checking for leaks.

[Doug Christie]

Silver Judge, I take it your coming up for it then?