FPV_Steve Donating Members 191 Member For: 18y 1m 21d Gender: Male Location: Brisbane Posted 08/07/09 09:07 AM Share Posted 08/07/09 09:07 AM As title says, I have just changed my plenum. I took the inlet manifold completely off to bolt the new plenum top to the lower half. I had to remove the fuel rail and injectors, I numbered all the injectors so I know they are back where they belong. I plugged all the sensors etc back in and connected all the hoses and extended my throttle body wires. The motor will start but idles up to 2200rpm for about 5 seconds then it drops to 1000 and sounds like its running on 3 cylinders!!!!! Could it have something to do with fuel pressure??? Or maybe I have hooked up a hose to the manifold wrong or something?????????someone please help. I am suppose to be taking it to elite for a retune tommorrow.CheersSteve Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/ Share on other sites More sharing options...
turbo.vixen Hey guys, Tab is here... Oh i feel sick Lifetime Members 8,459 Member For: 17y 1m 20d Gender: Male Location: sunshine coast Posted 08/07/09 09:09 AM Share Posted 08/07/09 09:09 AM sounds like a leak somewhere, can you hear any air leaking? Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903229 Share on other sites More sharing options...
CHLAXN Donating Members 932 Member For: 17y 1m 21d Gender: Male Location: north QLD Posted 08/07/09 09:14 AM Share Posted 08/07/09 09:14 AM what kind of plenum is it?? did you use sealent to seal them both together?? as vixen said could be air leak.. Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903230 Share on other sites More sharing options...
turbo.vixen Hey guys, Tab is here... Oh i feel sick Lifetime Members 8,459 Member For: 17y 1m 20d Gender: Male Location: sunshine coast Posted 08/07/09 09:15 AM Share Posted 08/07/09 09:15 AM yeah my old turbo laser did this and I found the vacuum line was disconected Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903231 Share on other sites More sharing options...
FPV_Steve Donating Members 191 Member For: 18y 1m 21d Gender: Male Location: Brisbane Posted 08/07/09 09:20 AM Author Share Posted 08/07/09 09:20 AM I used sealant between the plenum top and bottom half. I cant hear it leaking anywhere but I'll double check the vacuum lines. Im thinking losing fuel pressure, dont know how though? It wont stall but I dont like the sound its making during idle. Popping and running on 3 or less!!! Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903234 Share on other sites More sharing options...
FPV_Steve Donating Members 191 Member For: 18y 1m 21d Gender: Male Location: Brisbane Posted 08/07/09 09:24 AM Author Share Posted 08/07/09 09:24 AM Does the oxygen sensor have to be before the throttle body????????? I put mine in under the plenum?? On my old piping (rapid) it was before. Will this make a difference?? Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903236 Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 17y 2m 22d Gender: Male Location: Woodridge on the park bench Posted 08/07/09 09:26 AM Share Posted 08/07/09 09:26 AM mine had a high pitch whistle when it was leaking. Those vacuum lines are pretty easy to come lose or leave one off couple of mine are zip tied on Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903239 Share on other sites More sharing options...
FPV_Steve Donating Members 191 Member For: 18y 1m 21d Gender: Male Location: Brisbane Posted 08/07/09 09:34 AM Author Share Posted 08/07/09 09:34 AM mine had a high pitch whistle when it was leaking. Those vacuum lines are pretty easy to come lose or leave one off couple of mine are zip tied onHi mate, yeah I can hear a high pitched whisle I think?? Why would it cut out 3 cylinders though??? Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903243 Share on other sites More sharing options...
FPV_Steve Donating Members 191 Member For: 18y 1m 21d Gender: Male Location: Brisbane Posted 08/07/09 09:39 AM Author Share Posted 08/07/09 09:39 AM Just noticed that my BOV (stock) is pissing air out at idle???? Throttle body shutting??? Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903247 Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 17y 2m 22d Gender: Male Location: Woodridge on the park bench Posted 08/07/09 09:40 AM Share Posted 08/07/09 09:40 AM (edited) dunno very strange mine was very small leak was your plenum powder coated? That s where my mistake was I had to clean of the face then a new gasket. If its a huge leak it may have a bigger affect but mine was minor and the car ran fine anything over 3g there was a whistle. I also had no secondary map sensor connected for a week and the car ran fine ( the one before the throttle body) I kept it below 3g though watching afrsCHECK YOUR BOV VACUUM LINE Edited 08/07/09 09:41 AM by RIP85 Link to comment https://www.fordxr6turbo.com/forum/topic/59359-motor-not-running-after-plenum-change/#findComment-903248 Share on other sites More sharing options...
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