re: injectors cleaning

[hagar24]

Anyone in Canada can say where I can get MB 350 SE injectors cleaned?
Can't find new ones.

[daantjie]

Do you have D Jet or K Jet system?  K Jet injectors are cheap-cheap, get them from www.autopartsway.ca, free delivery!

[hagar24]

I have D Jet

[daantjie]

Oops, yes I think DJet injectors are very pricey if you can still find them.

You can bench clean injectors, at least the K Jet ones, as they open under applied pressure, and are not electronically controlled.  Not sue if you can do this with D Jet though, maybe some D Jet guru's will chime in.  Some companies do ultrasonic cleaning as well, but I have no experience with this.

You can always try to run injector cleaner through your fuel, or some guys do a little ATF in the fuel to clean the lines and injectors, might be worth a try.  This is a "light" fix, as you are in effect running very diluted cleaner through the line, so don't expect miracles.  Best "permanent" fix might be to get your hands on some new injectors if you can.

[hagar24]

Oops, yes I think DJet injectors are very pricey if you can still find them.

You can bench clean injectors, at least the K Jet ones, as they open under applied pressure, and are not electronically controlled.  Not sue if you can do this with D Jet though, maybe some D Jet guru's will chime in.  Some companies do ultrasonic cleaning as well, but I have no experience with this.

You can always try to run injector cleaner through your fuel, or some guys do a little ATF in the fuel to clean the lines and injectors, might be worth a try.  This is a "light" fix, as you are in effect running very diluted cleaner through the line, so don't expect miracles.  Best "permanent" fix might be to get your hands on some new injectors if you can.

I just recently moved from Vancouver to Toronto, I have tried all of the above but my #1 cylinder still has a miss on it and I know it's not the engine, it was rebuilt with zero miles on it, the problem was there before and is still there, I suspect dirty injector, but as you say pricey, must be someone on here that can tell me how I can sort this out.

[daantjie]

Maybe focus on good spark before you chase injector problem.

At least on K Jet, I have found that you need to determine you have good quality spark before you chase fuel related issues.  All your wires and plugs in tip - tops shape?  You might be surprised at how many issues can be hidden by old wires and plugs.  If you have not changed plugs in a while, give it a go, they are cheap.  Wires as well, should be common wire across the V8's methinks, get  a set of Bosch or Beru wires if you suspect they are a bit crispy.

Rock Auto have good prices, also Autopartsway, really good deals and free delivery in Canada if you order over $100, great service as well.

Hope we can get some D Jet guys on the case...

[karmann_20v]

I just recently moved from Vancouver to Toronto, I have tried all of the above but my #1 cylinder still has a miss on it and I know it's not the engine, it was rebuilt with zero miles on it, the problem was there before and is still there, I suspect dirty injector, but as you say pricey, must be someone on here that can tell me how I can sort this out.

How did you isolate the issue to cyl #1? Also if you are certain #1 has that miss, swap 2 injectors and see if the issue remains at the same cylinder or moves to the one that you moved #1 injector to, before you investigate further. Also as daantjie mentioned, make sure it's not ignition related.

[rob280sel]

If you find after changing injectors around that the problem persists.
Look at the second set of contacts within the distributor as well.

[hagar24]

Maybe focus on good spark before you chase injector problem.

At least on K Jet, I have found that you need to determine you have good quality spark before you chase fuel related issues.  All your wires and plugs in tip - tops shape?  You might be surprised at how many issues can be hidden by old wires and plugs.  If you have not changed plugs in a while, give it a go, they are cheap.  Wires as well, should be common wire across the V8's methinks, get  a set of Bosch or Beru wires if you suspect they are a bit crispy.

Rock Auto have good prices, also Autopartsway, really good deals and free delivery in Canada if you order over $100, great service as well.

Hope we can get some D Jet guys on the case...

I did all those things before I came to that conclusion,and this is a D Jet, thanks.

[hagar24]

I just recently moved from Vancouver to Toronto, I have tried all of the above but my #1 cylinder still has a miss on it and I know it's not the engine, it was rebuilt with zero miles on it, the problem was there before and is still there, I suspect dirty injector, but as you say pricey, must be someone on here that can tell me how I can sort this out.

How did you isolate the issue to cyl #1? Also if you are certain #1 has that miss, swap 2 injectors and see if the issue remains at the same cylinder or moves to the one that you moved #1 injector to, before you investigate further. Also as daantjie mentioned, make sure it's not ignition related.

I know it's not ignition related because I made sure when I did the rebuild to get all new parts ignition related, and I know it's number one by process of elimination.

[hagar24]

If you find after changing injectors around that the problem persists.
Look at the second set of contacts within the distributor as well.

Just put in a new set with Petronix Ignitor system

[s class]

K-jet intjectors are not worth trying to clean because they are so cheap, and the problem is usually wear in the pintle and seat preventing sealing, not so much dirtiness.

With D-jet, on almost every car that comes into the shop, we send the injectors out to a specialist who ultrasonically cleans them, pressure tests them and flow matches them. 

I'm in South Africa, but I would be sure there must be similar services based out your way, or at least in the U.S.

[hagar24]

K-jet intjectors are not worth trying to clean because they are so cheap, and the problem is usually wear in the pintle and seat preventing sealing, not so much dirtiness.

With D-jet, on almost every car that comes into the shop, we send the injectors out to a specialist who ultrasonically cleans them, pressure tests them and flow matches them. 

I'm in South Africa, but I would be sure there must be similar services based out your way, or at least in the U.S.

Been looking but so far can't find anyone on this side of this big pond to help, also need a RHD dash, can't find this also.

[CraigS]

I bought a Bosch set yesterday for A$220 (for (number ending 047) so as mentioned, it is not worth the cost of cleaning.

[hagar24]

I bought a Bosch set yesterday for A$220 (for (number ending 047) so as mentioned, it is not worth the cost of cleaning.

I am in Canada, where did you buy them and is for a 1974 350 SE?