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To start i have a 1995 citroen zx estate 1.9td with a bosch injector pump. In the summer months she gets nothing but the finest brand new vegatable oil but when winter looms i run a 50/50 mix. Even with the mix on a frosty morning she doesnt like to start that easily. I have decided that this year i want to set up a preheating system to aide the cold mornings but I'm tight and want to do it as cheap as possible. i got the skills to fabricate and weld etc. just don't know the set up i really need. my first option was to run one of these between the normal diesel filter and the pump. supposedly this is a heated fuel filter for mercedes diesels. has anyone used one of these and do they work. my second option is to get some cast iron gaspipe and some t's etc to make a chamber with some glowplugs in it. so i can warm the fuel in the chamber just before starting. (i don't want to do this idea) but if it works i will. third option is to get maybe 3" ali pipe from an old intercooler set up or fresh stainless. cap the ends with 2 barb fittings for in/out fuel line. a couple of bungs welded in side to house 2 glow plugs and heat wrap the whole lot. then splice it in just before the pump. other than spending a ton of money i don't know what other options are out there. anyone sorted issues like this or had any experience in the subject? ?
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I used an oil/water heat exchanger when I did my old Rover 220 TD. Came from a veg powered council Transit. EBay has them. Ran like curse word cold but once warmed up sweet as a nut. There's also coolant preheaters 240v plug in.
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tristanh
Part of things
Routinely bewildered
Posts: 990
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Whether you believe you can, or you cannot, you're probably right.
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I don't know, but a Farmfoods flyer came through our door today, they are doing 2x 10 litre bottles of veg oil for £16.
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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None of that will help starting. It may help it in the first few mins of running but for starting it simply isn't heating where you need heat.
I would start with advancing the pump slightly as if it won't start on 50/50 reliably theres somthing not quite right. (I assume it has new glowplugs tho?)
I run my xud on about 5-10% petrol in the winter and although It can be sluggish at times it's not really let me down. Infact if your using new oil I would expect it to run on neat all year round really.
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We used to run a transit on new veg oil, a squirt of starting fluid in the intake got it started every time.
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so it does start just runs like a badass 13b bridgeport for ten mins until its warmed. I'm still on the standard fuel filter set up which has a heat exchanger in it. just wanted to warm a reservoir of fuel right before the pump. new glow plugs are going in pay day and i only use costcos finest brand new oil 14.49 for ten litres. what does advancing the pump do? ?
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Well in that case the pump is probably all right. It's normal for it to run a bit rough until it comes up to temp. That happens pretty quick on these xud engines tho because as you say they have a built in heat exchanger under the filter
The only thing I could suggest is an inline electric heater between the filter and pump. I was going to try this on mine but really it's not been an issue to put up with a bit of roughness for a few miles after a cold start. The HDI cars had a suitable inline heater you could use.
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yeah basically my current train of thought is go from the filter to a bit of capped off 3" stainless exhaust maybe 8" long. an inlet and outlet either side and a couple of glow plugs front and back sort of thing. a bleed screw at the top and a temp sender npt bit for a gauge. heat wrap the whole job and return it to the pump. so i can flick a switch heat that chamber of veg oil up then have like maybe a litre of warmed oil going straight to the pump. then turn it off when the engine is warmed up.
i will have a look out for the hid heaters cheers buddy.
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just look up electric car pre heater on ebay, they're about £30-£40, plug in and heat the engine and cabin, then unplug start and drive away in warmth!
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oddly my mk2 astra 1.7D has an electric heated fuel filter as standard, so i guess with your original link, the fact its an OEM system must count for something. (for reference lucas CAV DPC pump, IDI engine)
after i change my fuel filter, if i don't pre fill it with diesel the engine lasts about 5 or 6 seconds before cutting out, so while i agree with slater in one respect that its not heating the diesel in the actual pump, you can see what the turn over is.
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basically i want to make a bigger version of this with a little digital temp gauge to make sure I'm not heating it up to the temperature of the sun.
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so it does start just runs like a badass 13b bridgeport for ten mins until its warmed. I'm still on the standard fuel filter set up which has a heat exchanger in it. just wanted to warm a reservoir of fuel right before the pump. new glow plugs are going in pay day and i only use costcos finest brand new oil 14.49 for ten litres. what does advancing the pump do? ? Cheaper to run it on diesel if oil is that price.
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vanpeebles
Part of things
I am eastbound in pursuit of a white Lamborghini, this is not a recording.
Posts: 978
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Have chips for breakfast, then put the chip pan oil straight into the tank
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so it does start just runs like a badass 13b bridgeport for ten mins until its warmed. I'm still on the standard fuel filter set up which has a heat exchanger in it. just wanted to warm a reservoir of fuel right before the pump. new glow plugs are going in pay day and i only use costcos finest brand new oil 14.49 for ten litres. what does advancing the pump do? ? Cheaper to run it on diesel if oil is that price. ah man i meant 20 liters. 72p a liter at costco.
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93fxdl
Posted a lot
Enter your message here...
Posts: 2,000
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Oct 11, 2018 19:16:27 GMT
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Run my t4 van on Costco veg oil, up here in Scotland it's a bit chilly so i am currently running 3 parts veg to 1 of diesel. Hurts when it costs the same for 11 litres of diesel as 20 of veg. Mine sounds like a bag of spammers at certain rpms when cold but fine once warm. Have considered fitting a greenhouse heater under the bonnet or a block heater, but since a couple of cycles with the glow plugs get it started i doubt if I shall bother. Did once see an article where someone fitted an extra glow plug to the injection pump to thin the oil in the pump, also seem to remember someone fitting plugs to the inlet manifold in an attempt to warm the incoming air Ttfn Glenn
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Oct 14, 2018 20:35:57 GMT
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don't forget in a sub zero morning start then it doesn't matter if you have heated the fuel in the filter to boiling point, the fuel in the line to the pump and in the pump will still be at -5 degrees and be like grease, even when you have shifted that through your injectors and started dragging through the new stuff heat soak will mean it will be stone cold again as the pump and engine block absorb all the heat in milliseconds. The only way to avoid this is with a preheater for the block and coolant, if you can raise the temperature of that to even 10 or 20 degrees then you at least are in with a chance of easier starting. Electric and fuel burning heaters are available, the fuel burning ones you can run a separate tank with kero or red for the heater.
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Oct 14, 2018 22:27:23 GMT
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ROVER 75 20 DIESELS USE PREE HEATER PLENTY ON EBAY
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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The bottom line is you simply can't get enough energy out of your battery to make any difference to cold starting. Glowplugs only work as the fuel is sprayed directly at them more or less. They are there to help ignite it rather than warm it before hand.
Try adding petrol instead of diesel Its both cheaper and better at thinning. You should easily get away with 10% petrol on an XUD.
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stealthstylz
Club Retro Rides Member
Posts: 14,834
Club RR Member Number: 174
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There are other things you can mix with veg oil that don't cost a fortune and will mean it'll start like a normal diesel
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