Hard starting when warm, 10-15 min/ stop 10 min/ hard to start |
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Hard starting when warm, 10-15 min/ stop 10 min/ hard to start |
Tom |
Sep 10 2009, 01:45 PM
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#1
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
76 2.0 d-jet. stock displacement, hydraulics, with smog removed and backdated exhaust to 74 2.0 SSI's with Triad.
Runs great. Pulls hard to redline in 4th with no missing. Idles 850-950 when warm. Starts up when cold just great and idles 700-800. After running 10-15 minutes to town and going in the store for 10-15 minutes, come back out and turns over but doesn't want to fire. Pedal to the floor and turn over for 30-40 seconds and it gets faster and faster and finally fires up. Then runs great. If it sets for an hour or more , no problem in firing right up. Searched here and the only thing I can see that may be causing this is the distributor plate spring(s)? The wiring is all fairly new, so I don't think that would be the problem. Checked all of the connections and they are clean and tight. If the dist plate is sticking in the full advance would that give me these symptoms and how would I fix that? Grease? Special type? Thanks for any help, Tom |
Cap'n Krusty |
Feb 19 2010, 11:37 AM
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#2
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
News flash, guys. THEY DID THIS WHEN THEY WERE NEW!
The Cap'n |
pbanders |
Feb 22 2010, 10:27 PM
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#3
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Senior Member Group: Members Posts: 939 Joined: 11-June 03 From: Phoenix, AZ Member No.: 805 |
News flash, guys. THEY DID THIS WHEN THEY WERE NEW! The Cap'n As the Cap'n says, this is "normal" behavior. Mine does the same thing, though not as bad as described here. It's a flaw in the system design. The head cools off more rapidly than the rest of the engine, so the head temp sensor gets "cold" even after only 10 minutes. However, the core of the engine is still quite hot. The net result is you get too rich a mixture and it makes starting hard, and the first few minutes of running are too rich until the heads heat back up. If you let it sit for a full hour, the whole engine gets cold and that's why it starts fine. Mystery solved. One way to start it more effectively is to open the throttle completely BEFORE turning the key. If you open the throttle once you turn the key, you pump 20 ms worth of gas into two of the cylinders due to the action of the throttle switch, making it even richer. Try that next time and see if it starts faster. |
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