 Exhaust Temperature and thermostat, #3 is noticably cooler |
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| tracks914 |
 Apr 25 2004, 07:30 PM
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#1
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Canadian Member  Group: Benefactors Posts: 2,083 Joined: 15-January 03 From: Timmins, Ontario, Canada Member No.: 153 Region Association: None   |
I'm still trying to set up my engine, a little at a time. (Timing, changing leaking injectors, pressure system, you know the stuff) The engine appears to idle smooth, no back firing, timed properly but, while underneath the car listening for valve train noise I happened to put my hand near each exhaust pipe. Cylinder #3 was noticably cooler than the rest. I couldn't touch any of the other three and I couldn't hold onto #3 but I could touch it briefly. It was too hot to hold but not to touch. The car has only been running maybe 10 minutes total on and off but I was surprised to see this.
Could it be a bad injector not supplying enough fuel, too much fuel? It is one of the ones I will have to change becuase it is weeping a bit of fuel but I was just wondering?? (IMG:style_emoticons/default/confused24.gif) The other thing I was wondering is how long should it take for the bellows to operate to open the cooling ducts. The car is in the garage, up on stands, but it was only about 40*F in there with the doors open. The bellows never opened in ten minutes but the engine never appeared to get that hot. (IMG:style_emoticons/default/confused24.gif) Tx Doug |
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| Mark Henry |
Apr 25 2004, 07:39 PM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
The bellows will take a long time to open fully at that temp. Maybe as much as 20-30 min. at highway speed. At 20C it will open as soon as the engine is warmed up.
On the T1's # 3 is one of the hottest, but again it may not have run long enough to get real hot. BTW on my old VW bus, I just touched my forearm to #1 once and it took the skin right off...ouch. |
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| mike_the_man |
Apr 26 2004, 11:27 AM
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#3
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I like stuff! Group: Members Posts: 1,338 Joined: 11-June 03 From: Regina, Saskatchewan, Canada Member No.: 809 |
If #3 has a leaky injector, then it's probably getting too much fuel. That should make it run cooler. You could pull the plugs and compare. #3 should be running richer. These are just my thoughts, I could be totally wrong.
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| d7n7master |
Apr 26 2004, 01:58 PM
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#4
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Gary# Group: Members Posts: 663 Joined: 13-March 03 From: The O.C, Ca. Member No.: 421 |
Or you could swap the injector to a diff. location & try again.
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| tracks914 |
Apr 26 2004, 07:54 PM
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#5
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Canadian Member Group: Benefactors Posts: 2,083 Joined: 15-January 03 From: Timmins, Ontario, Canada Member No.: 153 Region Association: None |
I put another old leaky injector into that cylinder, started it up and right away the exhaust pipe got hot. This is probably the problem. I am looking into a couple of new injectors now. Anyone got a good deal on them?
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