Either that or you may be missing some vacuum lines.
CA18DEs are very sensitive to that kinda thing. Also make your your throttle body isn't cocked open from tension on the throttle cable.
![[ img ]](http://media.impactblue.org/imagepost/CA18DET_Butterflies/fast_vacuum_diagram.gif)
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| Ca18de help please with high idle http://ozdat.com.au/forum/viewtopic.php?t=30450 |
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| Author: | Ricky180b [ Tue Jan 15, 2013 9:27 am ] |
| Post subject: | Ca18de help please with high idle |
Hi all, I have a early 200b and just fitted a ca18de engine. Everything is ok apart from 1 problem the engine is idling at 1500 I've checked all pipes there's no leaks. I've asked Manu people here in uk but no one really has given me the right answer. The engine was running excellent out of the car it was from but just not in mine any help will be very much appreciated |
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| Author: | Nissanman [ Tue Jan 15, 2013 10:41 am ] |
| Post subject: | Re: Ca18de help please with high idle |
I assume you have backed off the idle adjustment screw to minimum? I know you have checked for leaks but it sounds like an air leak to me. Are you using the Air Regulator for cold start? This device is an electrically heated by-pass valve that goes from the air intake to the manifold, by-passing the throttle plate. However if not powered up it will be open all the time causing high idle. |
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| Author: | Imago [ Tue Jan 15, 2013 12:47 pm ] |
| Post subject: | Re: Ca18de help please with high idle |
Either that or you may be missing some vacuum lines. CA18DEs are very sensitive to that kinda thing. Also make your your throttle body isn't cocked open from tension on the throttle cable.
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| Author: | Ricky180b [ Wed Jan 16, 2013 7:16 am ] |
| Post subject: | Re: Ca18de help please with high idle |
You see that yellow pipe ambient mine is a bit squashed as it got dented so its a bit closed could it be that |
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| Author: | Ricky180b [ Wed Jan 16, 2013 7:32 am ] | |
| Post subject: | Re: Ca18de help please with high idle | |
I assume you have backed off the idle adjustment screw to minimum?
I know you have checked for leaks but it sounds like an air leak to me. Are you using the Air Regulator for cold start? This device is an electrically heated by-pass valve that goes from the air intake to the manifold, by-passing the throttle plate. However if not powered up it will be open all the time causing high idle. How do I check the air regulator is it powered by a positive or negative could you send me a photo of here this is and what it looks like please |
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| Author: | Nissanman [ Wed Jan 16, 2013 11:43 am ] |
| Post subject: | Re: Ca18de help please with high idle |
Here is a link to the S13, S14 and S15 Silvia Service Manuals: - http://www.mediafire.com/?52sxrychy59lz Unfortunately, the file is not searchable but here are a few relevant excerpts: - Attachment: Air Regulator electrical location.jpg [ 79.26 KiB | Viewed 2335 times ] Attachment: Air Regulator physical location.jpg [ 150.66 KiB | Viewed 2335 times ] Attachment: Abnormally high idle.jpg [ 182.47 KiB | Viewed 2335 times ] Attachment: CA18DE[T] Air Regulator.jpg [ 43.41 KiB | Viewed 2335 times ] Attachment: Test of air reg.jpg [ 10.42 KiB | Viewed 2335 times ] Attachment: FICD.jpg [ 21.08 KiB | Viewed 2335 times ] |
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| Author: | Ricky180b [ Thu Jan 17, 2013 5:15 am ] |
| Post subject: | Re: Ca18de help please with high idle |
Many thanks for this I will try this out over the weekend and let you no your help is appreciated |
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