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99 civic - valves are now fixed, tbelt is good, but cold idle is weird
| disallow | 27 Dec 2005 17:59 |
Hi all,
Previous posts I have put up will bring you through the 'saga' i have had with my sisters car. Short story is that the t-belt snapped. It was then taken to a honda dealership. They just put it back together (650 bucks later) said no compression on cylinder 3. Obviously, the incident caused valve damage on cylinder 3 (all 4 valves bent), so I took the car to my house, pulled the head off, replaced them and put it back together.
Well its all back together now, and it is running well, except at initial startup. It takes 10-15 seconds for it to figure things out, then it goes up to about 1500 rpms until warmed up, and drops down to the correct rpm.
I told my sisters husband that this is probably due to there being air in the cooling system. I imagine that if the car has been sitting overnight, that the air in the system would 'burp' up to the top of the cooling system. Pretty much right at the top is the coolant temp sensor, which would not be immersed due to the air in the system. After 10-15 seconds though, the water pump will have primed the system, and the sensor would now be immersed, allowing the correct idle to be attained.
Is this a safe assumption or am I talking outta my a.s? :)
Other items of note:
Initially, the car had been put back together (without any work on the valves) at a honda dealership. 2 items got destroyed when the t-belt snapped; the CKF sensor and the lower timing cover. Well there are already belt slap marks on the inside of the timing cover due to incorrect tension setting on honda's part.
Also, the timing belt was off by 1 tooth from the dealership.
I'm pretty pissed at the dealerfor their complete lack of knowledge on how to tell if there is valve damage without actually just putting it back together and hearing a cylinder miss.
Thoughts?
t
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