Replacement injectors

Simon Blythe

Simon Blythe

Zorg Guru (I)
Joined
Nov 29, 2016
Points
95
Location
South Birmingham
i was wondering if the injector below pt no 13641427240 will be suitable for my 2.8 onCH32 code.

Thanks for any help

image.webp
 
It may fit the number you have on it is the Bosch part number it lists as the bmw equivelent when you look.
 
I'll take a look.

I'm just doing a bit of fault finding as the project is a little lumpy when she's hot so I'm wondering if I've got a partially blocked injector or an air leak somewhere. It seems to "rumble" a bit then tick over normally.

As you've seen from my other thread the HG is good so due could be lacking in an injector or a plug could be breaking down.
 
You've had it stripped for the manifold change the inlet boots are prone to deterioration over time but i would have thought you would of found this but unmetered air would cause lumpy but i imagine at cold as well as hot.
 
Sounds like it could be the Idle Control Valve or around that area vacuum leak. Did you thoroughly clean it cos if it sticks just slightly it causes idle problems. Hope this helps.

Roy.
 
Rha said:
Sounds like it could be the Idle Control Valve or around that area vacuum leak. Did you thoroughly clean it cos if it sticks just slightly it causes idle problems. Hope this helps.

Roy.
Click to expand...

Thanks Roy, you may well be right. What is the best way to clean the valve?
 
Simon Blythe said:
I'll take a look.

I'm just doing a bit of fault finding as the project is a little lumpy when she's hot so I'm wondering if I've got a partially blocked injector or an air leak somewhere. It seems to "rumble" a bit then tick over normally.

As you've seen from my other thread the HG is good so due could be lacking in an injector or a plug could be breaking down.
Click to expand...

Hi Simon, you'll have to take it off to clean it, I used some carb cleaner, not cheap but can be used to get rid of oil and carbon deposits on other jobs. That valve needs to be so clean you can hear it open and close with a clunk when you shake it from side to side which is how it operates with vacuum pulling it open/closed when no accelerator is used/tickover. ( hold the main barrel in your hand with the two openings facing left and right,flick your wrist L and R to see how free it is) Took most of my can of carb cleaner and a good few minutes before mine was free and easy. My tickover wasn't bad but got a lot smoother after this clean, reackon it must/should be part of a BMW service at some interval or other. Other thing to check is does the throttle fully close, too tight a cable could keep it open fractionally which would upset the tickover. If all that fails I would look for a vacuum leak.
Plugs and injectors will give you a fault code on your reader as should the ICV but ICV is known to stick slightly without showing fault code. Hope all this helps. Good luck, looking forward to meeting you to discuss the swap.

Roy.
 
Rha said:
Hi Simon, you'll have to take it off to clean it, I used some carb cleaner, not cheap but can be used to get rid of oil and carbon deposits on other jobs. That valve needs to be so clean you can hear it open and close with a clunk when you shake it from side to side which is how it operates with vacuum pulling it open/closed when no accelerator is used/tickover. ( hold the main barrel in your hand with the two openings facing left and right,flick your wrist L and R to see how free it is) Took most of my can of carb cleaner and a good few minutes before mine was free and easy. My tickover wasn't bad but got a lot smoother after this clean, reackon it must/should be part of a BMW service at some interval or other. Other thing to check is does the throttle fully close, too tight a cable could keep it open fractionally which would upset the tickover. If all that fails I would look for a vacuum leak.
Plugs and injectors will give you a fault code on your reader as should the ICV but ICV is known to stick slightly without showing fault code. Hope all this helps. Good luck, looking forward to meeting you to discuss the swap.

Roy.
Click to expand...
Thanks Roy - that's very kind of you to go into so much depth.

I'm happy to PM you my number if you'd like to discuss the swap.
 
Hope to see you at one of our meets Simon and we'll have plenty to talk about, don't want to spoil it if we've already talked on the phone, if you get my drift.;)
Roy.

Ps, just post up anything I can help you with in the mean time.:thumbsup:
 
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