Weld connecting pipe to intake manifold?

[DjBij099]

Here's my story. Every since I took my car out of storage, it's been having this hesitation problem when I try to move from a stop. It gets a short burst after 2800rpms and then seems to fall flat on it's face. I've finally today, after a very long time, been able to track down a vacuum leak as the connecting pipe that goes to the lower intake manifold. It's #38 in the picture below:



As I'm spraying carb cleaner in that particular area where in meets the intake manifold, the idle starts to dip and it almost dies out. I have bought a new gasket for it from the dealer, but that still didn't fix it. I bought new bolts too from the dealer, but they ended up breaking and I took it to a shop to have them drill it out and they put 2 10mm honda bolts in it's place. I had a thought to take it to a shop and have them completely weld that connecting pipe up. I have sprayed the cold start valve mating area as well and I can guarantee it is not that. I bought a new gasket for that one as well too for the hell of it. My question is, would there be any downfall to doing this particular mod? I'm on CIS-Basic and don't have a ISV and honestly don't think I will ever be removing that connection pipe anyway.

[elomont]

What about some silicone rtv gasket sealer?

I don't see this as being detrimental.

[DjBij099]

What about some silicone rtv gasket sealer?

I don't see this as being detrimental.

Would it be fine for fuel seeing as how it's right by the cold start valve as well?

[ps2375]

Should be OK for that.

[elomont]

I'm not sure.

ps2375 has more experience than I do so I would go with his take or maybe someone else will chime in to state they have used gasket sealer around fuel areas before with no negative results. Then you can go with the consensus.

Seems like a simple fix (or try) though.

[ps2375]

Have you tried replacing the gasket for that piece, then a smaller amount of sealer can be used and it'll be fixed correctly. Another sealer that I have found to be very good is called Dirko.

[DjBij099]

I'm not sure.

ps2375 has more experience than I do so I would go with his take or maybe someone else will chime in to state they have used gasket sealer around fuel areas before with no negative results.

Seems like a simple fix (or try) though.

I'm usually not a fan of sealants and such, but this small area has really pissed me off for the past 3-4 months now Now that the RTV sealant was brought up, what about JB weld? I'm looking for a more permanent solution to where the damn thing will never really come off again. I'll rule out the welding idea. It's too tight of an area for someone to actually weld with the intake manifold still on the car.

[DjBij099]

Have you tried replacing the gasket for that piece, then a smaller amount of sealer can be used and it'll be fixed correctly. Another sealer that I have found to be very good is called Dirko.

Yup, I replaced the gasket, but I did not use any sealer

[elomont]

What if you ever need to replace the cold start injector!?

Sure you could grind off the JB Weld......which leads me back to the most likely permanent quick and easy fix of some type of gasket sealer.

Don't worry we won't tell anyone you used gasket sealer to fix the problem. It will be our little secret.

[DjBij099]

What if you ever need to replace the cold start injector!?

I could still remove the cold start injector. The cold start injector goes into the connecting pipe and the connecting pipe hooks up to the lower intake manifold. You can see it in the pic above. Where #38 goes to #37 is the piece I want to have welded or find someway to keep shut.

[ps2375]

Take it apart and put some sealant on both sides of the gasket and reassemble. Not that hard. There really is no need for JB Weld.

[elomont]

I second that opinion.

[DjBij099]

Take it apart and put some sealant on both sides of the gasket and reassemble. Not that hard. There really is no need for JB Weld.

I second that opinion.

I'll give it a shot and see what happens. Thank you both

[PCB83GTI]

I had one break on me before, being cheap I put it back together with JB weld and it worked. Is the connection pipe #38 good?

[DjBij099]

I had one break on me before, being cheap I put it back together with JB weld and it worked. Is the connection pipe #38 good?

The pipe itself is good. I just put some clear silicone rtv sealant on it. I gotta let it sit for 24 hours, then I'll see if it corrects my very small and sneaky vacuum problem

[DjBij099]

The RTV sealant did the trick. Car is all better now. Just gotta set my timing once again and I'm good to go. Thanks again fellas