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BHPian Join Date: Dec 2008 Location: Semi-nomadic
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I realise that there's no proof, the article you linked was very specific about that. Question is 'why' do companies like WARN, Roo, Light Force etc. offer filters and what are the uses for the different colours? Red for preserving night-vision makes sense to me, what about yellow and blue? Regarding your questions: 1) Why the heck do I have a electronic fuel pump? 2) Can't the Bosch FIP do the whole job? 3) What should I do to throw away the electronic fuel pump? I have been told that the FIP needs to be recalibrated, etc. But I want to understand the full function of the diesel Jeep FIP, and how it works, and why it needs the crutch of EFP sometimes. 1) I don't know about your jeep, but in all probability, I don't think you have an 'electronic' fuel pump. It is an 'electric' fuel pump. 2) The Bosch FIP is a Fuel Injection Pump and it is responsible for injecting diesel at the correct pressure into your engine. Now you have another pump (considerably smaller, cheaper and simpler than your FIP) which is responsible for supplying diesel to the FIP, from the diesel tank. This is called a diesel/fuel pump and can be mechanical (older systems) or electrical. I guess Bosch could design the complete fuel system, but it just makes better sense to specialise in making a specific component with a specific job while the rest is left up to the vehicle manufacturer. 3) You can throw away the electrical fuel pump if you want to, but you would have to replace it with a mechanical system (not sure if it's easily available) also you have to remember that they're obsolete for a reason. Guess what you need to do is get a good quality fuel pump and get a competent mechanic to make sure it is in tune with the rest of the system. Cleaning out your tank(during monsoon, water and dirt can get into your tank), and replacing fuel lines would be advisable as well. Hope all your problems get solved soon. | |
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![]() | #1067 |
Senior - BHPian | ![]() Sharat - Post 1058 onwards should get back to the 'lost' bible of Jeeps ![]() |
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![]() | #1068 | |
BHPian Join Date: Jun 2006 Location: Banagalore
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Thanks --Sree-- | |
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![]() | #1069 |
Distinguished - BHPian ![]() Join Date: Jul 2007 Location: MUMBAI
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| ![]() Dear all - in all vehicles having XDP4.90 / XD3 / MDI engines, there is no need for a separate pump, mechanical or electronic. The FIP is sufficient to bring fuel from the tank upto itself. Dear Sharath - I presume you have a so-called "electronic fuel pump" in your fuel system. If so, you may remove it and throw it out. Maybe it is the root cause of all your troubles. I have never used it so I cannot comment on its characteristics. Maybe before you bought the vehicle, its FIP was not working properly and somebody introduced this electronic fuel pump to tide over the situation. Please ensure that the FIP is correct for your CJ340 and it is fitted and timed properly by a person who knows what he is doing. If the electronic fuel pump leaves the system, the fuel line orientation will change. Please use new fuel lines and route / clip them properly. We have provided clips on the LH fender for fuel line clips in CJ340. You should only use MICO dual fuel filter unit with a pressure regulating valve in it. This valve is located inside one of the connections (I think it is inlet but I am not too sure). Most mechanics tend to throw away this valve, causing all sorts of problems. The complete filter unit should cost you somewhere around 3000 rupees. You may buy a new valve separately and use it. It should be available at genuine MICO outlets. It seems that by the time you supposedly finish everything, except the chassis frame, nothing will remain of the original vehicle that you bought. This once again amply demonstrates the vulnerability of "normal" customers to the vagaries of the "local" system. Best regards, Behram Dhabhar |
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![]() | #1070 |
BHPian Join Date: Jun 2006 Location: Banagalore
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![]() | #1071 |
Team-BHP Support ![]() Join Date: May 2004 Location: Bangalore
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| ![]() And i think Sharath is referring to solenoid switch pump system (whatever model it is) to the electric pump?? And he wants to know if moving back to the older pump system which has cable shut down thingie which doesnt require power. Sharath please clarify. EDIT: I read it again and am wrong! You dont need an electronic fuel pump, you CJ would have been a 3B otherwise lol |
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Senior - BHPian | ![]() Quote:
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![]() | #1073 |
Distinguished - BHPian ![]() Join Date: Jul 2009 Location: Calcutta
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| ![]() Hi, My 340 runs fine (well, OK, not fine) without any additional pumps. One thing I'm careful about is the cleanliness of the full fuel system. I have twice faced maddening problems. The line till the FIP is under negative pressure. Leakage will cause air to get into the system, rather than fuel seeping out. Very difficult to detect. The second one was also because of negative pressure. I had tied the fuel hose to the chassis (thinking it would be less vulnerable). During high speed runs it would collapse, stalling the engine. Wait, crank, and it would run perfectly for the next 30 secs. Keep the revs at almost idle, and it would run for hours. (thats how I brought it back to civilisation) One question. Why didn't you use the fast idle control? Regards Sutripta |
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![]() | #1074 | |
BANNED | ![]() Quote:
Also havent heard of a mahindra (peugeot) having a feed pump bet Tank & the FIP . I have a 540 for 21 years ,have experienced the supply pipe collapse. Behramjee has rightly said there is no place for extra feed pump. This FIP hardly goes wrong ,but if it does the only thing to do is get serviced at a proper place (authorised service ) I think Shibuji's & Behramsir's advice combined together will solve the Issue. Sudarshan | |
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Team-BHP Support ![]() | ![]() Wow, lots of discussions here. Sorry for the delayed reply, I was driving from Manipal to Bangalore all day. BTW, I did see couple of MGE support team vehicles parked in front of Chikmagalur bus stand, they were there for this weekend MGE. Quote:
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When it is stalling, even a floored pedal doesn't help. How will fast idle help since that too is pulling the same lever? Quote:
Thanks everyone for all the info. I have already stripped the winch/trunk/spare-tyre from the Jeep while awaiting for appointment from the mechanic. This is the same mechanic who rebuilds all of Sachin's vehicles, he has 30+ years of experience and highly respected by most mechanics in the whole district. Need to find a Bosch service center for the FIP calibration though. I'll ask the mechanic to make my Jeep EFP free. | ||||||||
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![]() | #1077 |
Team-BHP Support ![]() Join Date: May 2004 Location: Bangalore
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| ![]() Not only FIP but the injectors also, it make a hell lot of difference. |
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![]() | #1078 | |
Team-BHP Support ![]() | ![]() Quote:
![]() Bosch - Karnataka Edit: Apparently these is one in Mangalore, where all the udupi mechanics go. Last edited by Samurai : 26th August 2010 at 13:01. | |
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![]() | #1079 |
Senior - BHPian | ![]() Sharat, Yes ^ - caliberate them as a set, makes a lot of difference. In your case I would suggest you drive down to them early one morning, the cheiftan there is trained to remove the 4 inj + FIP from any vehicle, let him remove it and the whole process takes about 2-3 hours (add a few hours for other customers), then refit it there by himself - in this case you can avoid the travel back to m'lore for fine tuning. |
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![]() | #1080 | |||
Distinguished - BHPian ![]() Join Date: Jul 2009 Location: Calcutta
Posts: 3,844
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Regards Sutripta | |||
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