Author Topic: The mess under the intake (Read 330788 times)

Jimmy Lewis · « **Reply #120 on:** October 03, 2008, 10:53:58 PM »

What else do you need? 5/8 worked for me. To fit it on the ICV I had to heat it up and then jam it on with hairspray. The bit between the ICV and manifold sees heavy vacuum so you need something stiff. I bought that bit at a boat store, it was meant as pressured water hose, it does the job.

91 318is · « **Reply #121 on:** October 04, 2008, 11:18:35 AM »

Just did this on my 91 and idles much better now, the vaccum hoses under the intake weren't cracked too bad, but had some small splits where they slide on the fittings, but I do have a slight problem.

Does anyone know the best way to bleed the coolant system? I've been trying to bleed it for about 30 minutes and not having too much luck. When I run the heater on full hot, it's blowing cold, so I know there's air in the system. Is it better to run it with the cap off or should I put the cap on and let the system pressurized? When I leave the cap off, the temperature doesn't get too hot, but it just pumps coolant out of the overflow. When I cap it, it begins to overheat and I shut it off.

Any advice?

JP 91iS · « **Reply #122 on:** October 04, 2008, 06:49:23 PM »

Quote from: 91 318is;57872

Does anyone know the best way to bleed the coolant system? I've been trying to bleed it for about 30 minutes and not having too much luck. When I run the heater on full hot, it's blowing cold, so I know there's air in the system. Is it better to run it with the cap off or should I put the cap on and let the system pressurized? When I leave the cap off, the temperature doesn't get too hot, but it just pumps coolant out of the overflow. When I cap it, it begins to overheat and I shut it off.

Any advice?

http://www.m42club.com/forums/showthread.php?t=6597

EN318isPDX · « **Reply #123 on:** October 21, 2008, 03:41:16 PM »

need to sticky this still

kvin112 · « **Reply #124 on:** October 29, 2008, 12:33:08 PM »

I'm doing the same project with removing the manifold and replacing the all the hoses ($200.00 dumped at the dealer). As well as the famous ICV issue. There was a large amount of calcium deposits on hoses. Is that normal for the coolant hoses? As far as I know this car was very well taken care of. Also, I wanted to know if you ran into any problems with putting the new hoses back together. That will probably kill me putting everything back. Any suggestions?

JP 91iS · « **Reply #125 on:** October 29, 2008, 02:27:25 PM »

Quote from: kvin112;59717

I'm doing the same project with removing the manifold and replacing the all the hoses ($200.00 dumped at the dealer). As well as the famous ICV issue. There was a large amount of calcium deposits on hoses. Is that normal for the coolant hoses? As far as I know this car was very well taken care of. Also, I wanted to know if you ran into any problems with putting the new hoses back together. That will probably kill me putting everything back. Any suggestions?

I wouldn't expect an abnormal amount of deposits unless tap water or low quality coolant/wrong coolant was used. Could also be from waiting too long between changing the fluid.

What kinds of problems are you expecting? You should be deleting the unnecessary hoses to the Throttle Body heater. If you need images for reference you can find them at realoem.com.

Birdman16 · « **Reply #126 on:** November 20, 2008, 08:18:41 AM »

Quote from: thebigbadyeti;25636

While your cleaning everything up...clean up that motor as well .... lol...

second the motion!!! Get that thing tidy before putting it back together.

Isamemon · « **Reply #127 on:** December 24, 2008, 08:35:12 PM »

great thread. Ill be pulling my 91's head off this weekend, and Ill be adding all of this to the job
I have not been into it yet so Ill also get the plastic water pipe, this old, dont need to crack it a year form now
thanks

naika · « **Reply #128 on:** January 05, 2009, 04:03:36 AM »

Happy I found this just when i was working on replacing all the gaskets on my M42, it is much cleaner even though I'm not done ( waiting for parts).
Thanks

Duct_Taper · « **Reply #129 on:** February 25, 2009, 09:59:26 AM »

Bringing up an old thread again... but has anyone in a cold climate (northern USA, or Canada) done this mod successfully? I'd like to do it but I'm concerned about the effects for cold weather driving.

Cobra Jet · « **Reply #130 on:** February 27, 2009, 08:29:26 AM »

My M42 has the entire "hose delete" mod and it's been driven in temps as low as 10* here in NJ over this past winter - no issues whatsoever.... It starts, idles and drives perfectly fine in cold or warm weather.

xwill112x · « **Reply #131 on:** February 27, 2009, 09:09:49 AM »

Quote from: Cobra Jet;67318

My M42 has the entire "hose delete" mod and it's been driven in temps as low as 10* here in NJ over this past winter - no issues whatsoever.... It starts, idles and drives perfectly fine in cold or warm weather.

+1.

mine runs better in cool weather

Wizard · « **Reply #132 on:** March 01, 2009, 10:09:33 PM »

I was living in Florida when I did the mod...I have now been in Pennsylvania since the end of January and have not noticed any ill effects. Have had some pretty cold days here..

irish79 · « **Reply #133 on:** March 07, 2009, 07:33:55 PM »

hey there,

i have to sort out the air intake housing on my 90 is, what changes did you apply to the hose's to minamise and relocate them. and also why have you a breather filter on there?

mark

JP 91iS · « **Reply #134 on:** March 09, 2009, 11:42:09 AM »

Quote from: irish79;67877

hey there,

i have to sort out the air intake housing on my 90 is, what changes did you apply to the hose's to minamise and relocate them. and also why have you a breather filter on there?

mark

The modifications to the hoses are covered in this thread and here. You can also see some pics at the link in my sig.

The breather filter is acting as an oil catch can to keep the oil residue and sludge build up out of the throttle body and intake manifold. You may not have this problem as bad as others - it all depends on how worn your engine internals are.