Johncracknell Posted March 9, 2013 Report Share Posted March 9, 2013 My 69 keeps fouling the number 5 injector, the normal tapping and pulling plunger with finger nails clears it, but, only temporarily ( 10 / 20 miles ) then it does it again. Obviously there's some s**t coming in, but from where ? What's the consensus on the best fix., or fixes, for this problem ...... ?? Quote Link to post Share on other sites
Denis Posted March 9, 2013 Report Share Posted March 9, 2013 My 69 did the same one last year, it seemed to be bits of it's own rubber seal, and a new injector was the answer for mine! Quote Link to post Share on other sites
peejay4A Posted March 9, 2013 Report Share Posted March 9, 2013 Is it fouling or an air ingress problem. 2 and 5 can suffer from this if the non return valves fail in the MU banjo connections. Quote Link to post Share on other sites
DIYBOSSCAT Posted March 9, 2013 Report Share Posted March 9, 2013 Hi John, try swapping injector with another one (not No 2), if that one still fouls then it's a injector problem, if not then its in the line somewhere. Vince. Quote Link to post Share on other sites
Johncracknell Posted March 10, 2013 Author Report Share Posted March 10, 2013 Thanks, I don't think it's air I think it's particles of something or other. I will try swapping number 5 with 1 or 3. Quote Link to post Share on other sites
Davidw Posted March 10, 2013 Report Share Posted March 10, 2013 Have you tried an airline blow gun up its bottom at the right pressure? (80psi I think, but am open to correction) Worked for me. Quote Link to post Share on other sites
badshead Posted March 10, 2013 Report Share Posted March 10, 2013 John O ring breaking up? This is what mine looked like when removed, not causing a problem at that stage but only a question of time: Quote Link to post Share on other sites
Johncracknell Posted March 10, 2013 Author Report Share Posted March 10, 2013 I've got some checking to do, not today though its to wet ! Anybody have a schematic of the injector and MU showing the seals, I have looked for one but can't find one. ?? Quote Link to post Share on other sites
badshead Posted March 10, 2013 Report Share Posted March 10, 2013 Anybody have a schematic of the injector and MU showing the seals, I have looked for one but can't find one. ?? This might help http://www.lucasinjection.com/Lucas%20Mk2%20manual%20page%203%20CONTENTS.htm Bill Quote Link to post Share on other sites
Johncracknell Posted March 11, 2013 Author Report Share Posted March 11, 2013 I'm thinking of replacing the injector o rings as a starting point, are all the o rings of the same quality or are some suppliers or manufacturers better then others... Quote Link to post Share on other sites
Quentin Posted March 11, 2013 Report Share Posted March 11, 2013 Try sending to Mike Bilney. I just got mine back complete with new viton O rings and set to about 60 psi. He will test them as received and report on open and close pressures, cone shape etc. £10 each. One of mine was opening at 35 and lock off pressure was all wrong too. No connection. Quentin Quote Link to post Share on other sites
Johncracknell Posted March 12, 2013 Author Report Share Posted March 12, 2013 Try sending to Mike Bilney. I just got mine back complete with new viton O rings and set to about 60 psi. He will test them as received and report on open and close pressures, cone shape etc. £10 each. One of mine was opening at 35 and lock off pressure was all wrong too. No connection. Quentin Any contact details for Mike Quote Link to post Share on other sites
Quentin Posted March 12, 2013 Report Share Posted March 12, 2013 Hi John I sent you a private message Cheers Quentin Quote Link to post Share on other sites
Johncracknell Posted March 14, 2013 Author Report Share Posted March 14, 2013 So I've now sent the injectors off to be re- set, the car which I've had since November is fitted with the RIMMER braided injector delivery pipes, I'm hearing mixed reports on these, does anyone have an opinion on these v the original type ? Quote Link to post Share on other sites
peejay4A Posted March 14, 2013 Report Share Posted March 14, 2013 (edited) I had braided hoses and suffered fuel vaporisation problems so I reverted to original nylon and had no further problems. The experience of others is different and that might be down to differences in the bores of the braided ones dependent upon their origin. I would imagine that your question will prompt further mixed reports Edited March 14, 2013 by peejay4A Quote Link to post Share on other sites
Johncracknell Posted March 14, 2013 Author Report Share Posted March 14, 2013 I had braided hoses and suffered fuel vaporisation problems so I reverted to original nylon and had no further problems. The experience of others is different and that might be down to differences in the bores of the braided ones dependent upon their origin. I would imagine that your question will prompt further mixed reports How would you identify fuel vaporisation happening in the lines, ie symptoms , why would these braided lines cause this to happen, It appears RIMMER don't supply anything other than braided lines now, can the original style ones be bought as a set complete, ready to attach to the injectors and the MU . Also, how often would you expect to have the MU serviced. ( seals and wearing parts ). Quote Link to post Share on other sites
peejay4A Posted March 14, 2013 Report Share Posted March 14, 2013 Nylon injector sets, ready to fit, can be obtained from Prestige Developmentshttp://www.prestigeinjection.net/ There are other suppliers. I put my vaporisation problems down to either the braiding conducting engine compartment heat then through the nylon into the fuel, or that the inner pipe was of a smaller diameter than the original pipes. I don't know which. The symptoms were that it would start fine from absolute cold but would splutter and f*rt for a good while if starting from hot or warm until the vapour lock cleared. In 13 years of TR6 ownership I had one refurbished MU shortly after I got the car. Quote Link to post Share on other sites
Johncracknell Posted March 14, 2013 Author Report Share Posted March 14, 2013 Thanks Peejay Quote Link to post Share on other sites
Johncracknell Posted March 22, 2013 Author Report Share Posted March 22, 2013 I was recommended to give Mike Bilney a try to set up my injectors, I did, what a nice bloke. They were received today bang on the day he said they would be back, nicely packaged with re- fitting instructions and bleeding instructions. What a refreshing change, somebody who performs the job properly and doesn't take liberties on prices !! No connection, but would thoroughly recommend him to anyone. John Cracknell. Quote Link to post Share on other sites
Lockley210 Posted March 22, 2013 Report Share Posted March 22, 2013 Might be worth checking if you have a short banjo fitting. I Changed the MU unit recently which came with reconditioned valves One was longer then the other and caused the injector to fail on No2 The longer one (33.65mm) works. http://i211.photobucket.com/albums/bb314/Lockley210/IMG_8948.jpg http://i211.photobucket.com/albums/bb314/Lockley210/IMG_8952.jpg http://i211.photobucket.com/albums/bb314/Lockley210/IMG_8953.jpg Cheers Mark Quote Link to post Share on other sites
Quentin Posted March 23, 2013 Report Share Posted March 23, 2013 Mark, good find. How frustrating, but equally satisfying to find the cause. Not sure I'd have ever have got there on that one. Q Quote Link to post Share on other sites
Lockley210 Posted March 23, 2013 Report Share Posted March 23, 2013 Quentin It was only because the Injectors were fine before the change, so it must have been the most recent alteration. I suspect there may be many more out there!! cheers Mark Quote Link to post Share on other sites
Johncracknell Posted March 25, 2013 Author Report Share Posted March 25, 2013 Quentin It was only because the Injectors were fine before the change, so it must have been the most recent alteration. I suspect there may be many more out there!! cheers Mark Looking at many of the pics of engine bays a lot of 6s have the braided injector pipes, everybody that has them are either satisfied they are working or wondering if they have a misfire type scenario with these, I am !! ( wondering ) . If nearly all of them are performing fine what's made some people ( Quentin ) experience this proble ?? . John. Quote Link to post Share on other sites
Jersey Royal Posted March 25, 2013 Report Share Posted March 25, 2013 Quentin It was only because the Injectors were fine before the change, so it must have been the most recent alteration. I suspect there may be many more out there!! cheers Mark Looking at many of the pics of engine bays a lot of 6s have the braided injector pipes, everybody that has them are either satisfied they are working or wondering if they have a misfire type scenario with these, I am !! ( wondering ) . If nearly all of them are performing fine what's made some people ( Quentin ) experience this proble ?? . John. i have braided fuel lines from Revington Tr, been on the engine years and never given me any problems. Had a chat with Neil Revington about them in the past ,I believe all braided hoses are not of the same standard, you get what you pay for Cheers Guy Quote Link to post Share on other sites
Johncracknell Posted March 27, 2013 Author Report Share Posted March 27, 2013 Re fitted and bled the injectors, much better now. Can't help feeling that I really ought to muck out the fuel filter and lines though. Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.