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#1 piglet1

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Posted 10 October 2017 - 05:54 PM

right guys I'm in need of some help iv just replaced the engine on my 7th gen estate with a low millage engine out of an 08 accord as well as replacing the turbo the we got the car running after a little air bleeding and the motor ticks over sweet as a nut but assign as you build the revs up and the turbo starts to build boost the car splutters and won't rev past 2k if you hold the throttle down it will slowly try to rev a bit more it won't rev past 2.5k but it then starts to bellow white smoke out let it tick over again and its fine any advice would be a great help 



#2 edgeoftime

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Posted 10 October 2017 - 05:58 PM

Fuel filter been replaced?



#3 piglet1

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Posted 10 October 2017 - 06:18 PM

just replaced it with a bosh one  new oil ,new coolant 



#4 Jon_G

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Posted 10 October 2017 - 06:36 PM

If you now have different injectors then they'll need to be coded to the ECU, but I doubt it would cause such a severe problem.

Did the new engine come with all its ancillaries, or have you had to refit many of the old bits from the original engine (valves, actuators, sensors, etc)?

Have you let it warm up?

Any warning lights?

#5 piglet1

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Posted 10 October 2017 - 06:52 PM

Hi Jon the engine was from an 08 and came bare apart from the sensors so I had to swop over all the other bits injectors egr exhaust manifold and so on I also had another turbo that I fitted as my original one was dead the injectors are my original ones in the same order they cam out the old engine I have no lights on at all not even wen it won't rev the car was left to tick over and warm up before I found out it wouldn't rev the turbo came complete so iv just bolted it to the manifold iv replaced all gaskets on the parts iv had to swop as well 



#6 F6HAD

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Posted 10 October 2017 - 07:10 PM

Try temporarily blanking your egr valve and see if it makes a difference.
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#7 piglet1

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Posted 10 October 2017 - 07:25 PM

Try temporarily blanking your egr valve and see if it makes a difference.

the egr is off my original motor and worked fine on that tho 



#8 Jon_G

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Posted 10 October 2017 - 07:32 PM

Can you read manifold absolute pressure or other real-time parameters?

Odd to not be able to rev with the engine off-load... maybe suggests a sensor problem (particularly the accelerator pedal position sensor?). But you'd expect an error code to appear once the engine is hot and running in closed loop mode.

Do you think the white smoke is unburnt diesel or water vapour?

How did you remove the injectors from the old engine? If you unbolted the top part to fit a puller then I'm worried that you may have lost one or more of the internal ball bearings...

#9 F6HAD

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Posted 10 October 2017 - 07:33 PM

If you don't want to try then that's up to you.
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#10 piglet1

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Posted 10 October 2017 - 07:51 PM

If you don't want to try then that's up to you.

I'm happy to try it I was just saying its the original one thats all when you say blank it of temporary do you mean totally unbolt it and fit a blanking plate ?


Edited by piglet1, 10 October 2017 - 07:59 PM.

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#11 piglet1

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Posted 10 October 2017 - 07:56 PM

Can you read manifold absolute pressure or other real-time parameters?

Odd to not be able to rev with the engine off-load... maybe suggests a sensor problem (particularly the accelerator pedal position sensor?). But you'd expect an error code to appear once the engine is hot and running in closed loop mode.

Do you think the white smoke is unburnt diesel or water vapour?

How did you remove the injectors from the old engine? If you unbolted the top part to fit a puller then I'm worried that you may have lost one or more of the internal ball bearings...

I have no way of measuring the pressure sadly the old injectors came out really easy I unbolted the clamps and they came out with a little wiggle I didn't replace the sealed on them when I re fitted them could that cause this ? it splutters as soon as it tries to build boost as if its something to do with the turbo (I'm not saying it is tho )



#12 TypeR

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Posted 10 October 2017 - 08:26 PM

I have no way of measuring the pressure sadly the old injectors came out really easy I unbolted the clamps and they came out with a little wiggle I didn't replace the sealed on them when I re fitted them could that cause this ? it splutters as soon as it tries to build boost as if its something to do with the turbo (I'm not saying it is tho )

I'd check around the injectors for leaks, that could be your issue. Also have you attached all hoses etc fully and not damaged any in the process?


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#13 piglet1

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Posted 10 October 2017 - 08:30 PM

I'd check around the injectors for leaks, that could be your issue. Also have you attached all hoses etc fully and not damaged any in the process?

iv been over all the hoses I replaced a Cpl of hose clamps as they where weak but all hoses are connected and not leaking if the injectors where leaking  would it cause it to not rev at all ? 



#14 TypeR

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Posted 10 October 2017 - 08:38 PM

Obvious question but did you actually see the replacement engine running prior to installing?


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#15 Jon_G

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Posted 10 October 2017 - 08:45 PM

It shouldn't be demanding much boost when running in neutral! Even if the turbo was seized it should still hit the red line.

Injector seals would worry me a bit, but can't really cause this problem. It would be obvious if they're leaking from the fumes... Probably worth checking at some point.

Have you run the engine until it got really properly hot? Only then does the ECU read all the sensors and would then flag an engine code if it saw a problem.

If you do need a real-time reader/OBD2 scanner I could let you use mine if you live somewhere around this end of Shropshire?

#16 piglet1

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Posted 10 October 2017 - 08:55 PM

It shouldn't be demanding much boost when running in neutral! Even if the turbo was seized it should still hit the red line.

Injector seals would worry me a bit, but can't really cause this problem. It would be obvious if they're leaking from the fumes... Probably worth checking at some point.

Have you run the engine until it got really properly hot? Only then does the ECU read all the sensors and would then flag an engine code if it saw a problem.

If you do need a real-time reader/OBD2 scanner I could let you use mine if you live somewhere around this end of Shropshire?

 

ill replace the injector seals tomorrow to be safe the car didn't get really warm no I will leave it ticking over for longer tomorrow I'm just outside Shrewsbury I think a mats going to try his reader on it tomorrow evening if I have no joy in the morning is it possible that it just needs to get hot check all systems and could sort its self (long shot I guess )



#17 Jon_G

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Posted 10 October 2017 - 09:06 PM

Yeah, I doubt that it'll fix itself! But at least if you run it for a while it might flag a code, which would help a lot.

Leaking injector seals should he pretty obvious. Even a small leak can be checked by spraying WD40 down each injector well to show up any gasses coming up.
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#18 piglet1

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Posted 10 October 2017 - 09:08 PM

ill take a look again tomorrow and then update with any further news thanks guys for your advice 



#19 piglet1

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Posted 11 October 2017 - 08:34 AM

morning guys right after checking the car again today iv re bleed the diesel filter and no change I checked the injectors and found 2 leaking a little so iv orderd new seals and will fit them tomorrow iv also been doing a bit more digging and iv come across a few posts on the internet with similar symptoms to what iv got and they all say about the glow plug relay now the glowplugs aunt my original ones and iv not checked the relay as yet my question is would the relay on an 05 car be the same as on the 08 car as my new engine is from an 08 car so could this cause the problem I have 



#20 Jon_G

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Posted 11 October 2017 - 08:54 AM

If it starts ok then the glowplugs are working well enough. There is an 'extended glow' period to aid running during warm up, but this really wouldn't cause the degree of problems that you report. In any case, a failure of the glowplug system will generate a P1384 diagnostic trouble code and bring on the engine warning light.
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