petrol injectors.............
anyone changed these? im looking for a few pointers!
cheers simon
Why do feel there is a need to change them?
In my opinion there is no need to change these unless you are experiencing runing problems.
But if you are so convinced to change them, that is your porogative.
If you decide to renew the injectors, renew the injector seals. There are two per injector. One fits in the head and the other into a cone. The cone is available for renewal, that is up to you if you do not want to go to the trouble of removing the old seal out of the cone and clean them from carbon build up, just have the new cones instead. Relatively, inexpensive.
To renew the injectors, remove the injector lines. Mark them to make it easy to refit. Once the line lines are removed, undo the single bolt throught the injector bracket, this could be a 10mm head bolt or an allen head screw.
Lift the injector bracket, then you would be able to pull out each injector at a time. After the injectors and seals are renewed, simply refit in reverse order. To aid, the fitting of the seals and injectors, use some washing up liquid or silicone spray.
im thinking this is what is causing my backfire, one is not shutting off and allowing petrol to leak into the system mid cycle?
cheers simon
Backfire on over run could be due to lean or weak mixture settings, have the CO readings checked out, these should read in between 0.5% to 1.5%.
Check out the ignition timing, check for leaks, at the inlet manifold, or any of the rubber hoses on the idle circuit, have the valve cleareances checked out and adjusted as necessary and finally, the idle speed should be correct. The rubber hose to the idle adjust screw can perrish and split.
Use an aerosol brake cleaner to carefully spray on the inlet manifold gasket area, rubber hoses and the like to check for any leaks. If there is a leak present in the system, the engine speed will alter. Do not spray directly on to ignition elcetricals! Mixture is flamable.
Back fire could occur with blowing exhuast systems.
one is not shutting off and allowing petrol to leak into the system mid cycle?
Not sure if I'm interpreting this correctly but the injectors on the G inject continuously so the senario above does not apply.
You can check the spray / atomisation quality by removing the injector from the head. Insert into a bottle and turn the engine over. It should produce a nice symetrical cone.
Don't fix if it ain't broke springs to mind :D
Obviously extreme caution required :!: :!:
Symtoms seem more like electrical or air leak to me
well did them this morning took no more than 20 mins, took longer to remove air cleaner assembly! anyway puled out the existing ones checked number against new they were different arghh! so went back to pc and checked new numbers against bosch database and new one are right old ones wrong! swapped them over and all is good even seems to have more waft......... so no worries!!!
well did them this morning took no more than 20 mins, took longer to remove air cleaner assembly! anyway puled out the existing ones checked number against new they were different arghh! so went back to pc and checked new numbers against bosch database and new one are right old ones wrong! swapped them over and all is good even seems to have more waft......... so no worries!!!
What did you break in the process though, if your recent run of luck has continued-you must have broke something!
You should have said if you wanted injectors I could have got some via work buckshee
been to get my misfire/backfire sorted today! thats another post. anyway the injectors i took out were for a 2.8i ford granada or capri!! how dare they install such parts in my G. anyway update on the difference my 230ge is now capable of 75-80mph cruising (before 60mph). Even managed a short 90mph burst while on way to hospital the other day (sorry but needs must)
cheers simon
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just guessing like everything else that it has an expected life time and after 25 years im guessing there time must be near, and at £12 a go why not! the wheel bearings were not going but i did them! prevention is better than cure!
cheers simon