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Vehicle has VW Diesel engine. I need to clean the injectors from normal diesel use and the vehicle was not driven a lot in the last year. Cann't change the filter it's located in the fuel tank and it one of them life time filters. I purchased a bottle of STP diesel treatment and it helped the engine run a little better. I'm located overseas in Germany and all the army store has is STP or Gunk diesel treatment, which both is not the best. I was told by a halfway mechanic to put a bottle of rubbing alcohol in at the next fill-up. That it's better than any diesel treatment. What, I would like to know is this true and would rubbing alcohol cause any damage to the fuel System, engine, CAT ect.. Trying not take the vehicle to the repair shop and have them take the injectors out and clean them, at 175 dollars an hour Labor.

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  • Cars & Trucks Master
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You would be better off putting everclear alcohol in the system. Rubbing alcohol has no effect on the water content and may destroy the seals and gaskets in the fuel system. 100 percent ethanol. mixed in with the diesel.

Posted on Oct 21, 2013

Testimonial: "Thanks, I'm also a halfway mechanic if I know what is broke I can normally do it myself. BUT, I don't mess with anything like taking injectors out."

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SOURCE: cannot get 1987 chevy van 20 to keep running... stalls out

Best do a fuel pressure test. Should have chg. fuel filter from the get go. The only other filter is on the end of the fuel pump in tank. Bad gas and dirty gas will plug up fuel filter, hense burn pump up.

Posted on Apr 11, 2009

polarcycle
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SOURCE: Dodge Cummins Diesel injector change

They are a pain in the ****. You have to take the valve cover off, remove the fuel lines, remove the inlet valve, remove the rocker arms, then unscrew the injector out. There is no doubt, that you can do it yourself, just leave yourself 3-4 hours probably.

Posted on Jun 14, 2009

pippall
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SOURCE: 1995 Chevy Diesel, Randomly dies

Sounds like you have a problem with the crank sensor.They can have an intermitant fault.like an open curcuit Try changing the sensor.good luck hope that was helpfull.

Posted on Jul 24, 2009

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3:1 gas/ diesel in 2011 kia what can I do to remove it?


This site may have all your answers:
http://www.autobytel.com/car-ownership/maintenance-repair/accidentally-putting-diesel-in-a-gas-car-104029/

Basically do NOT drive the car and have the gas tank drained or talk to a mechanic.

Accidentally putting diesel in a gas car If you know that you have accidentally put the wrong fuel in the car, then don't compound the mistake by driving the vehicle while trying to think about what to do. Instead, call your mechanic immediately. At this point, the damage isn't permanent. If you drive and continue to drive, at one point the vehicle will stop and you will still have to have it towed.

There are two things you can do to try to fix the damage:
1. Try to clean up the damage yourself - have the vehicle towed home if it's not there already, and get as much of the diesel fuel out. How? By siphon if you can or any other method that you have available. Once you have as much of the diesel out as you can, fill the tank with the correct unleaded fuel that you normally use. Try to start the vehicle. It could take several attempts but it will start and it will smoke - a lot. It will continue to smoke until the last dregs of the diesel make its way through the system. It might run a little rough until everything is cleaned out. How it runs will depend on the proportion of diesel fuel relative to gas left in the tank.

2. Alternatively, have your vehicle towed to where your mechanic is and have the fuel tank drained of all the diesel fuel by a profession. They are also likely to flush out the whole fuel system. If the diesel stays in there for too long (and who knows how long is too long for your particular vehicle), it could ruin the fuel pump, lines and injectors. It is also possible that the diesel could have gummed up the spark plugs and filters. If this is the case, they will probably need to be replaced. Getting a professional to do the job will cost you anywhere from $100 to $500 and possibly a little higher depending on the extent of the damage.

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1 Answer

There is supply of diesel fuel from the lnjection pump but it seems no diesel going inside the chamber,,


Not enough information. What vehicle? What year? What kind of injection system? There are basically two kinds of diesel injection - injector pump and common rail.
I did notice you talking about an injector pump, but both these systems need a high compression pump to operate the injectors. On the older systems, the injector pump is connected via a gear system to either the crank or the camshaft, and its task is to supply fuel to the injectors in very much the same way as a distributor does on a petrol car.
Now, do you mean the header pump that supplies diesel to the injector pump, or do you mean there is diesel coming out of the injector pump between the pump and the injectors?
On the other system, which I assume you are talking about, diesel is supplied to a high pressure pump which keeps a rail at high pressure. All the injectors are connected to this rail - from there the name "common rail" - and the timing is supplied by the Engine Control Module (ECM) via electrical impulses. Now ,if you have diesel supplied to the common rail but the injectors are not popping, the problem is most likely with the ECM.
However, there is no way of helping you unless you supply more information.

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You have not mentioned what vehicle it is so this is a general fault. Often if this is the case the seat where the injector is fitted needs to be cut to ensure that the new seal has a flat surface to seal against.

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2 Answers

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One thing with diesels they do not like short trips and what I mean by short trips the vehicle needs to be started idle and driven for a minimal of 40 minutes 4 engine to fully heat up to prevent excess carbon build-up and if it has a lot of miles on it you are exhaust could be getting plugged up or restricted especially if it has a a catalytic converter on it if it's plugged up with suit you will get bad fuel mileage much same thing with your air intake a dirty air filter can rob you of power and fuel efficiency same thing on the exhaust side if a diesel can't breathe then it will gobble up more fuel then it needs and diesels need to have fuel treatment / injector cleaner that is meant for diesels ran through them at least every third fill up to prevent the injectors from getting clogged which will damage fuel efficiency and help prevent burning holes in your Pistons which is true with any injector gas or diesel and from my Google search of your vehicle the 3.2 L sized engine gets about the fuel mileage that you say you're getting if it's the 2.2 it should be getting 20 two 25 City and 38 to 40 Highway

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