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Showing results for tags 'fuel pump'.
Found 4 results
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Hey team. My 325i died on Friday night (some people might have seen me at Pak n Save getting towed haha). Did quick diagnostics while I was waiting for tow truck to come. Cranking forever and not starting. Funny enough I’ve already replaced fuel pump and fuel pressure regulator and other normal maintenance items so I’ve scratching my head. Got it towed back home, yesterday morning I’ve checked the usual things as it follows… All relays working. Fuse and relay for fuel pump is getting power while cranking as well as at connector end. I added direct power to the pump and I can hear the pump moving. Checked the fuel filter and it wasn’t the dirtiest as I’ve replaced about 1 year ago. But did some rust came out. So put everything connected again and disconnected the fuel hose to the regulator and injector rail, fuel not getting to the engine. So took out the pump again and this time I dipped in the fuel in the bucket and added the power directly, the pump motor moved but guess what, it’s back flowing from where inlet supposed to suck in the fuel to the outlet, this point I believe the fuel pump is damaged somewhat and I think bit of rust in the tank is the problem. I’ve already ordered the pump so hopefully I can at least test to see if anything else is the issue but meantime just wanted to see how you clean the tank inside. Any suggestions welcome. Thanks team.
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Despite having a decent amount of spares, a good E28 in-tank fuel pump is not something I have. (I do have an E34 one, that *should* work) So I'm looking to upgrade to an OEM+ type solution as that appears to be cheaper than a standard OEM pump. Thoughts on this? https://catuned.com/walbro-fuel-pump-genuine-install-kit Or any other suggestions?
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The E46 fitted with the M47N engine has 3 fuel pumps: In tank Intermediate, under the floor under the left-hand side front seat High pressure, on the engine I've replaced the fuel filter and intermediate fuel pump on the 320d, and now it won't start. I've documented a problem where the car just cut out while driving and thought I had tracked this to water passing a bulkhead grommet and shorting a relay (or similar) - having removed most of the car interior to check the initial suspect, the heater element, and finding it wasn't the problem, then refitting everything, the car ran beautifully. For a while. Then it died, exactly as it did before. Checking showed everything to be dry. I acquired a BMW Scanner 1.4.0 from another forum member (my apologies - I don't now recall who) and this revealed a code: - 4B90/11 - Rail pressure monitoring at engine-start Further investigation reveals this is a code given when the intermediate pump fails. The in-tank and high pressure pumps are diagnosed with specific codes of their own; the intermediate pump doesn't do this. I've replaced the pump and the fuel filter - no point just doing the pump. I even replaced them in the correct order - it looks like this may have been done before as they were the wrong way around. Probably not an issue, but let's do it properly! I've followed all documented procedure to ensure fuel flow through the pump and filter and there is diesel flowing from the front end of the pump/filter installation - next stop is the high pressure pump. Engine turns over, but will not start. Remove the inlet manifold, crack the connections to the injectors, turn the engine over for 10 seconds. Some fuel appears, but not as much as I would expect? Reconnect anyway, try again - no start. There's then a hiatus due to my unemployment while I struggle to acquire a laptop capable of connecting sensibly to the Scanner... Windows 7/10 devices don't much like doing this. OK - got that sorted, installed software. Check codes - there are no DDE-related (Digital Diesel Electronics) codes. No engine-related codes at all. I have INPA software but don't appear to have the correct USB cable/connector arrangement. I was sure I did, but maybe I dreamed it? Loaned it to someone? Just haven't found it (again)? [Note to self - tidy the bloody garage!] I appreciate INPA is far more comprehensive than Scanner 1.4.0. What I would like is for someone who knows what they are doing (I'm good at working things out, but start from a short-of-knowledge position) to come and give me a hand. It's a great car, and it is so frustrating to get this far without success. ? Compensation for putting up with me is obviously available. Beersies, food, fuel money... Pretty please? Someone...?
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I've been told that an E21 I've been looking at has the wrong fuel pump fitted, and that it doesn't supply enough pressure. This is a 320/6 - carb model... Surely that doesn't require much pressure? So... Does anyone have a spare pump, bearing in ind these appear to be specific to the E21 and E12? Or would I do better (as I suspect) to get a low(ish) pressure electric pump? I expect that'll potentially lead to requirements for a pressure regulator...
