Author Topic: The mess under the intake (Read 331128 times)

WeOnlyHaveLime · « **Reply #270 on:** October 21, 2010, 09:21:55 AM »

Thanks so much for clearing that up, everybody. Nice post, Gooch. Helps a lot.

I'll be heading to check out the car tonight and getting an idea of what parts I need and want to replace while I'm in there. Already replaced the fuel lines a while back, as mine had begun to leak. I'll recommend that anybody replace those while they're in there as it's only a few bucks, takes only a couple minutes, and even though mine looked fine and didn't leak one day, they sprung a leak out of nowhere the next.

Brian318is · « **Reply #271 on:** October 23, 2010, 01:40:25 PM »

So after calling about 10 local auto part stores in my area, not one of them carries or can order 15/32" or 19/32" vacuum hose. I have been browsing google for about an hour and have not been able to find any 19/32" VACUUM hose..

Anyone know where to get this stuff online or know an alternative?

tjts1 · « **Reply #272 on:** October 25, 2010, 01:17:24 PM »

Quote from: Brian318is;97823

So after calling about 10 local auto part stores in my area, not one of them carries or can order 15/32" or 19/32" vacuum hose. I have been browsing google for about an hour and have not been able to find any 19/32" VACUUM hose..

Anyone know where to get this stuff online or know an alternative?

You don't need those specific diameters. Just get the closest thing they have and squeeze the crap out of it. 3/8" and 1/2" hose are pretty damn common. Its rubber. It bends, it stretches, it punshes, it pleasures...

DesktopDave · « **Reply #273 on:** October 25, 2010, 01:45:20 PM »

Order silicone instead. There's a good selection at Summit, or on the ebay. It'll outlast the car...likely even all the rest of us too.

ryanjv · « **Reply #274 on:** November 01, 2010, 08:49:19 AM »

just did this this weekend. once i removed the manifold, most of the hoses underneath were mostly electrical tape. no wonder i was having so many issues. Also swapped out the coolant pipe while i was in there. good thing i had one on me too; the nub that the hose goes onto had snapped when i removed the hoses so there was no putting a new hose on or capping it. only real issue i had was i didn't have enough hose to go from the bottom of the ICV to the intake boot, so i had to use the plastic connectors (90 degree and straight connectors) to get me that little extra length. I'll probably replace with a new hose soon. I really like the red, but i can't find those red heater hoses anywhere

i've been on full synthetic for over a year now so luckily i didn't have to deal with that cruddy mess like in those pictures. and if anyone was worried about not having the heating plates on the TB, we got some light snow and quite a bit of heavy frost this weekend way up in northern Ontario near Georgian bay, and i didn't have any issues. Also got quite the frost here in Toronto this morning with no issues.

tonywonder · « **Reply #275 on:** November 02, 2010, 12:27:34 AM »

I also did this this past weekend. also changed my injectors to the 710s. was a little skeptical on the injectors but i think they are set properly into the intake manifold. i havent seen any leaks yet.

as for the throttle body vaccum hose issue. i have the TB with a direct hose connection on the bottom. i just plugged it off and connected the vaccum hose from the cover to the closest connection on the intake elbow. shouldnt be any issues right?

when i put everything back together it took a while for the car to start. i only had about a gallon of gas and i thought the fuel pump stopped working but it eventually started. anyone else have that happen?

i havent fully run the engine yet as i need to get some bmw spec coolant for her. but so far so good.

great writeup.

ryanjv · « **Reply #276 on:** November 02, 2010, 11:14:38 AM »

took me a few tries to start as well but i figured that was because i had disconnected the fuel rail from the fuel lines. After the initial start up tries, everything went back to normal.

Has this happened to anybody? I topped up my coolant after changing everything and in the last few days of driving it, the temperature gauge has been reading much lower. the 2 hour drive from the sticks back into the city on sunday, the gauge never got past 1/4. I averaged about 60mph throughout... for the first hour it stayed in the blue. Today was a little better, after about half an hour the temperature left the blue before rising to 1/4. although it was near zero today.

could this have anything to do with the swap? Could it be the coolant i added? i just topped up with a couple litres of extended life pre-mixed. The bottle said any make and model and doesn't mention any additives that they say are no-no's for bmw. Could i just need a new thermostat?

unt0uchable · « **Reply #277 on:** November 03, 2010, 01:56:09 PM »

I'm preparing to tackle my "mess" this weekend. I've sourced the parts I need at a local dealer, heater hose at AutoZone, and some 19/32" vacuum hose at Advance Auto Parts. This thread is awesome and gave me a lot of info on the change up. I have been reading it all morning/afternoon and it has ton's of info. I am also replacing my injector O-Rings while I'm in there, and the fuel line that are right there. My car has 278k miles tho so I am expecting to do some cleaning while I'm in there. I will post an update and some dirty pics when I get it done. Thanks again for this thread! It's priceless!

DesktopDave · « **Reply #278 on:** November 03, 2010, 02:39:14 PM »

Do we really need 19/32" hose? Isn't this just standard ~14mm O.D. vac hose?

I noted that the PO on my car used SAE (19/32?) fuel line and it's all cracked & nasty. I removed it & installed OEM 8x13mm hose instead. It's more expensive, but I frankly don't want to do it again.

DesktopDave · « **Reply #279 on:** November 03, 2010, 02:40:53 PM »

Quote from: ryanjv;98234

took me a few tries to start as well but i figured that was because i had disconnected the fuel rail from the fuel lines. After the initial start up tries, everything went back to normal.

Has this happened to anybody? I topped up my coolant after changing everything and in the last few days of driving it, the temperature gauge has been reading much lower. the 2 hour drive from the sticks back into the city on sunday, the gauge never got past 1/4. I averaged about 60mph throughout... for the first hour it stayed in the blue. Today was a little better, after about half an hour the temperature left the blue before rising to 1/4. although it was near zero today.

could this have anything to do with the swap? Could it be the coolant i added? i just topped up with a couple litres of extended life pre-mixed. The bottle said any make and model and doesn't mention any additives that they say are no-no's for bmw. Could i just need a new thermostat?

Did you bleed the system out really well? This particular car has some troubles with air staying in the system. I usually use Zerex G05 or BMW OEM coolant. It's only about $12 a gallon by me. Mix with distilled water only...

ryanjv · « **Reply #280 on:** November 03, 2010, 08:45:16 PM »

geez america coolant is cheap. the good stuff around here is double that.

I figured the lack of bleeding was what made the temperature shoot up. I felt i was pretty thorough in the bleeding, would not doing it enough make it stay reading as cold? Is it possible i just over filled it and put too much coolant in it? I didn't have a pan on me to catch it all at the time so i didn't do a flush, maybe i'll flush the coolant this weekend and start fresh; it has been about a year since it was changed

Brian318is · « **Reply #281 on:** November 09, 2010, 10:06:12 AM »

Alllllllllllright! I just got my car back together yesterday, pretty excited. It was down for 3 weeks thanks to some sheisty powder-coating guys. Took them 3 weeks to powdercoat my intake and valve-cover.

Anyway, I took care of the mess under the intake. I changed my 2-3" of fuel line, because it literally fell apart in my hands. I removed the heater plate, and capped the coolant lines between the head and the plastic coolant "junction." I doubled up on the caps, and will update if I experience any problems with them. Changed the vacuum lines, but I still need to get some stronger hoes for my ICV, I believe it is collapsing. Just need to tighten up a few things.

I also removed my fan, and I must say, it's quite nice. The engine stays up between shifts, and seems to transition more smoothly.

I changed my injectors to mustang, 4 pintle injectors. I installed new spark plugs, and converted to the COP kit from the turbo m42 guy.. installed very easily and is a very nice addition.

Just have to install my electric fan, and it'll be ready to ride.

Just want to say, I had to REALLY flush my coolant. I was hydrolocked at the head, and had too much air built up. I had to literally fill and re-fill my coolant lines and massage them in order to get all of the air out. It seems to be running fine right now, but just in case anyone encounters this same problem, try massaging passenger side coolant (when the engine is cold.) and filling with coolant, as this will circulate the coolant.

I'll post pics shortly!

rjcaptsean · « **Reply #282 on:** November 10, 2010, 09:51:43 PM »

Quote from: Brian318is;98517

Alllllllllllright! I just got my car back together yesterday, pretty excited. It was down for 3 weeks thanks to some sheisty powder-coating guys. Took them 3 weeks to powdercoat my intake and valve-cover.
I'll post pics shortly!

Definitely would like to see those. I thought about powdercoating them the same laguna green as the exterior.

As for the hose, one problem I ran into was the smog nazi failed my visual test due to the hose from the Intake -->ICV-->Intake Boot was heavy heater hose and not "fuel/emission" hose.

DesktopDave · « **Reply #283 on:** November 10, 2010, 10:22:31 PM »

You're joking! PA is pretty strict about emissions tests, but we have no visual test yet. I suspect if you're on good terms with your mechanic you could pass with no hoses at all. It's a 20 year-old car after all! Shouldn't seniors (I mean our cars, of course) get some more respect?

mr.vang · « **Reply #284 on:** November 30, 2010, 04:07:12 PM »

anybody know how long of each hose should i get? just those hoses under the intake not the rad. hose or heater. i haven't take it apart yet because i need my car for school today. i'm going to grab it on the way to school today.