i remember pulling the metering head apart for the first time with no information after my car sat for a few years, quite complicated for a first timer haha. old fuel had stuck the piston in place so air box flap couldnt move it, goes good now.
Great video showing us the various ways to increase fuel pressure and quantity going to the injectors. Can all this extra fuel be air- matched simply by adjusted the plunger sitting position? Would you be so kind as to list the various ways to increase fueling to the injectors. Cheers Cole
Well this is where it gets a bit hard to test unless your on a rolling road, but yes by adjusting the plunger height will allow the AFR to be adjusted to suit a certain car and its modifications.
@@GreyGooseRestorations what would be most interesting is a comparison of injector mists between factory kjet settings and modified kjet settings. I imagine a notable difference and should add a few power ponies.
Amazing stuff My son and I have just got my old Scirocco 1.8 8v going after 13 years. My son understood all this hence he got it going 😂. Two questions How much power gain do you feel is to be gained from tweaking the injection system. We've got a 4 branch manifold with bespoke exhaust system. Standard air box with panel k and n. Not sure of power but it's quick and responsive . We got 16.5 quarter mile which we were pleased with. 2. I feel this was so good for the time ,(my Scirocco would get 40+ mpg) Do you feel modern systems are that much better /reliable
Thanks, its hard to say how much it would gain but getting things spot on and adding a bit more fuel really makes a difference to how it performs. Modern systems are good but a well set up k-jetronic system can be fault free
Thank you. I personally have found the k jectronic to be brilliant. I had an XR3i once and the Scirocco since 2007. The problems was fuel related. New tank pump and filter needed
Great video, I'm currently replacing fuel lines on my 16v MK2 but cannot find the main feed and return lines from the metering head anywhere, where did you get these from?
I used a small pick type tool with a angled end on it, just enough to fit in the hole and hook under the metal filter head, can be quite hard to pull out
Thanks, not off hand but the bosch book that can be found online as a pdf is pretty much the same just yours has 2 extra cylinders, fuel volume and pressure should be the same
Great video, I recently refurbished mine and found the round filter had gone hard around the edges and would kink when trying to fit the metal clips, they went back on loose. Would you think this could cause any issue. I couldn't find a replacement.
@GreyGooseRestorations I'm not sure the correct terminology but its the one that slides over the piston housing, it sits below the 4 circular seals and secured by x2 metal split rings. You said its hard to get hold of in the video...my mk1 golf gti sounds like it's running on 3 cylinders since a refurbished it.
@GreyGooseRestorations that's what I thought but then it was running rough after. I then stumble across your videos and I am going to attempt to carry out the adjustments to hopefully get it running right. 👍
@@GreyGooseRestorations I have a Ford Escort Mk4 XR3I with k-jetronic. By mistake I put diesel in the system and has running rich on piston no4 since. I had a spare injectors which I changed and I opened the metering head but without the knowledge you just gave me. I will try and play a little bit with it tomorrow maybe I can find a way for the engine to run good on all 4 pistons.
Hello mate I have mk2 16v which has been standing for some time both fuel pumps are working but no fuel at any injectors, would a seized metering pin cause this? Thanks
Hi Mate, Luckily, thanks to you, I understand how KJet works. I am from France, and I have a Golf 2 Gti 8s EV, I know this car since I am a child, I used to go to school in the back seat. Anyway, from one day to another, It now refuse to start. I have spark to the candles, Fuel pompe is kicking on, Fuel comes into to the kjet. But apparently, because the candles are totally dry, fuel don’t go into the engine. A professional came but wasn’t able to start it, And I am not good enough to figure out what is the problem. Do you have any idea to help me ? 🤷♂️ I don’t really want to open the kjet.
The pin seams to move up and down, when I press on the aluminium plate in the air box. I can feel it falling down on the plate. There is also some fuel drop into the air box when I do so.
@@GreyGooseRestorations how much is the width of the one you got as mine are 17mm and I have another metering unit from an escort Rs turbo which are 22mm.
i saw your revision of the k jetronic. but you can get even more fuel out of it if you adjust the stroke of the airweigher. original it only has a stroke of 4.8 mm. if you adjust it properly you can even get 6mm. the full length of the slotted hole
Hi, many thanks for your reply, the winning noise start when I open ignition four or five times before the engine start. When the engine start, noise will continue then the engine backfire and cuts out. I wonder if any issue with the head? Please help
Hi, I bought the car recently for restoration as non runner, I fitted brand new fuel pump and filter, engine would not start until I figured out that I need to prime the system first then engine will fire up, runs for a minute or two then stall, when I do open ignition few times to prime I hear the metering head start making noise before I start the engine. The head should not make any noise, is it possible that the head building too much pressure and the fuel return valve is not opening? I really appreciate your time and help. Thank you
Another outstanding video sir. The dark arts of the metering head are now fully understood 😀
Thanks! This topic faces a lot of diverse interpretations.
i remember pulling the metering head apart for the first time with no information after my car sat for a few years, quite complicated for a first timer haha. old fuel had stuck the piston in place so air box flap couldnt move it, goes good now.
Well documented video...I've been skooled...I understand now how it works. Great video much appreciated.
Your. Videos are very useful for m.b.owners
Bosch K-jetronic - when things are becoming WAY too complicated . . . How I love my carb- and Monojetronic feed engines . . .
The theory behind that obscure device 😁
Great video showing us the various ways to increase fuel pressure and quantity going to the injectors. Can all this extra fuel be air- matched simply by adjusted the plunger sitting position?
Would you be so kind as to list the various ways to increase fueling to the injectors.
Cheers
Cole
Well this is where it gets a bit hard to test unless your on a rolling road, but yes by adjusting the plunger height will allow the AFR to be adjusted to suit a certain car and its modifications.
@@GreyGooseRestorations what would be most interesting is a comparison of injector mists between factory kjet settings and modified kjet settings. I imagine a notable difference and should add a few power ponies.
Very helpful thank you!
Amazing stuff
My son and I have just got my old Scirocco 1.8 8v going after 13 years. My son understood all this hence he got it going 😂.
Two questions
How much power gain do you feel is to be gained from tweaking the injection system.
We've got a 4 branch manifold with bespoke exhaust system. Standard air box with panel k and n. Not sure of power but it's quick and responsive . We got 16.5 quarter mile which we were pleased with.
2. I feel this was so good for the time ,(my Scirocco would get 40+ mpg)
Do you feel modern systems are that much better /reliable
Thanks, its hard to say how much it would gain but getting things spot on and adding a bit more fuel really makes a difference to how it performs.
Modern systems are good but a well set up k-jetronic system can be fault free
Thank you.
I personally have found the k jectronic to be brilliant. I had an XR3i once and the Scirocco since 2007. The problems was fuel related. New tank pump and filter needed
Amazing description. Does your machined tapered shaft make any extra power with the extra richness at higher rpm?
Need to give it some more thought and/or testing as its only using s standard bit currently
Great video, I'm currently replacing fuel lines on my 16v MK2 but cannot find the main feed and return lines from the metering head anywhere, where did you get these from?
Thanks, i used the originals items as they were in very good condition
Hi, excellent video. Can I ask how you remove the tiny filters from the metering head? thanks
CC
I used a small pick type tool with a angled end on it, just enough to fit in the hole and hook under the metal filter head, can be quite hard to pull out
Very knowledgeable! Would you have the pdf for the ford cologne v6 metering head as found on a 1986 Xr4x4 2.8 sierra
Thanks, not off hand but the bosch book that can be found online as a pdf is pretty much the same just yours has 2 extra cylinders, fuel volume and pressure should be the same
Great video, I recently refurbished mine and found the round filter had gone hard around the edges and would kink when trying to fit the metal clips, they went back on loose. Would you think this could cause any issue. I couldn't find a replacement.
Which filter do you mean?
@GreyGooseRestorations I'm not sure the correct terminology but its the one that slides over the piston housing, it sits below the 4 circular seals and secured by x2 metal split rings. You said its hard to get hold of in the video...my mk1 golf gti sounds like it's running on 3 cylinders since a refurbished it.
Ah yeah the main gauze type cylinder filter, aslong as it doesn't or hasn't moved and still covers the inlet parts should be fine
@GreyGooseRestorations that's what I thought but then it was running rough after. I then stumble across your videos and I am going to attempt to carry out the adjustments to hopefully get it running right. 👍
Any issues just shout 👍
Great explanation
Thanks 👌
@@GreyGooseRestorations I have a Ford Escort Mk4 XR3I with k-jetronic. By mistake I put diesel in the system and has running rich on piston no4 since. I had a spare injectors which I changed and I opened the metering head but without the knowledge you just gave me. I will try and play a little bit with it tomorrow maybe I can find a way for the engine to run good on all 4 pistons.
I do love an XR3i😁
Hello mate I have mk2 16v which has been standing for some time both fuel pumps are working but no fuel at any injectors, would a seized metering pin cause this? Thanks
Yes either that or the main system pressure relief valve could be stuck 👍
Hi, how do you reseal the metering head? Can you show that aswell?
I'll try and cover that in another video
Hi Mate,
Luckily, thanks to you, I understand how KJet works. I am from France, and I have a Golf 2 Gti 8s EV, I know this car since I am a child, I used to go to school in the back seat.
Anyway, from one day to another, It now refuse to start. I have spark to the candles, Fuel pompe is kicking on, Fuel comes into to the kjet. But apparently, because the candles are totally dry, fuel don’t go into the engine. A professional came but wasn’t able to start it, And I am not good enough to figure out what is the problem. Do you have any idea to help me ? 🤷♂️ I don’t really want to open the kjet.
The pin seams to move up and down, when I press on the aluminium plate in the air box. I can feel it falling down on the plate. There is also some fuel drop into the air box when I do so.
If theres fuel leaking its best to unbolt the metering head from the air metering and have a good look at whats going on.
What do you torque the screws that hold the two castings together? Do you use any sort of sealant between the halves? Thx
I used wellseal to aid sealing but only a small amount. I torqued them to 15nm
@@GreyGooseRestorations thx : )
Does anyone know where I can get centre filter for the control pin barrel thingie?
Mine is split...
If you speak to missingparts.de he may be able to sorce them 👍
Hi.
Is it possible to find the new iron membrane for 5zyl iron distributor ?
Yes, if you contact missingparts.de he can supply those
@@GreyGooseRestorations Thank you.
hello, very good videos from you...can you send me the data of the modified control piston.kind regards Mario
Modified pin didn't work in the end, found other ways to get more fuel
@@GreyGooseRestorations and what do you found?
@sweety110277 by adjusting the system pressure and flow adjusters can provide plenty enough fuel
@@GreyGooseRestorations How many ml have you set per injector per minute?
Hi, what are those washers called? On the xr3i is closed in the middle not like the one in the vid.
The main washers inside the metering unit? White ones?
@@GreyGooseRestorations Yes, the ones that sit on the spring.
I can't remember the part number off hand right now but i do have 4 spare ones if thats what your after?
@@GreyGooseRestorations how much is the width of the one you got as mine are 17mm and I have another metering unit from an escort Rs turbo which are 22mm.
Ill get a measurement in the morning 👍
i saw your revision of the k jetronic. but you can get even more fuel out of it if you adjust the stroke of the airweigher. original it only has a stroke of 4.8 mm. if you adjust it properly you can even get 6mm. the full length of the slotted hole
Is this the same adjustment as the "plunger height"?
Pretty much yes
Do you sell the modified fuel pins with the milled chamber?
Hi, yes if you send me a fuel pin and chamber i can rework it
@@GreyGooseRestorations what is a good email address for you? I will email you.
Is there an email I can use to contact you?
@@seanporter6795 sent us a message via facebook.com/GGRestorations/
Why my gti metering head making like winning sound?
Its more likely an air leak near the metering head
Hi, many thanks for your reply, the winning noise start when I open ignition four or five times before the engine start. When the engine start, noise will continue then the engine backfire and cuts out. I wonder if any issue with the head?
Please help
@NassifBouMalham to be honest that could be a lot of things, has the car ran recently and this issue being new
Hi, I bought the car recently for restoration as non runner, I fitted brand new fuel pump and filter, engine would not start until I figured out that I need to prime the system first then engine will fire up, runs for a minute or two then stall, when I do open ignition few times to prime I hear the metering head start making noise before I start the engine. The head should not make any noise, is it possible that the head building too much pressure and the fuel return valve is not opening?
I really appreciate your time and help.
Thank you
@NassifBouMalham I'd then suggest checking the return flow to see if its partially blocked
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