View Full Version : coolant tubing

09-23-2014, 01:31 PM
Do the coolant hoses/tubing that run over the valve covers have a known weak point? Back when I was driving the bird everyday I got a big plume of smoke on the exit ramp from the interstate on my way home one night. It looked like the normal heater core leakvso I bypassed the core and had no further issues. I did cap the passenger side at the intake manifold fitting. Being I haven't had a lot of time lately to finish up a couple of loose ends I started it the other day just to make sure the battery was staying charged. In doing so I once again got a big puff of smoke/steam from the passenger side again. It appears to be coming from under the intake tubing/valve cover area not fuurther down. Heater core was replaced only to find a fresh one had already been installed. Throttle body is after market but tubes on coolant tubing have been capped. I noticed nothing abnormal about the tubing when I had the engine out. Is there something I may have missed?

09-23-2014, 08:17 PM
Only issue I ever had was on my 96, the rubber hose blew out.

10-11-2014, 08:21 PM
I think I found the issue. It appears the cap on the nipple for the throttle body hose is not sealing. I have a rubber cap with a hose clamp on it. IIRC I replaced this when I had the engine out as the one that was on there looked suspect. Wondering what my options are. Remove it and have welded closed? Epoxy? Any other suggestions?

10-12-2014, 12:16 AM
Bypass the hoses to the throttle body they only warm up the t/b for cold climates. Get a brass adapter put the two hoses together that are on t/b and leave t/b alone no coolant to them when hoses detatched.