Gas in a diesel

criver · **Joined:** Sun May 20, 2012 5:56 pm **Posts:** 15

Ok. So I solved one problem, but I have another one. My wife accidentally put gas in our CRD. Then drove it. The pump is now gone! The dealer wants $4000, big I found it for 1300 at IDparts. Dealer said that the injectors may be gone as well. Are they right? Or just blowing smoke?

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flash7210 · **Posted:** Tue Oct 07, 2014 8:06 pm

Yes, the injection pump is probably toast.
Yes, the injectors may be bad too. Have them sent off to a diesel shop for testing.
Yes, gasoline in a diesel is catastrophic.

racertracer · **Posted:** Tue Oct 07, 2014 8:19 pm

hold on......

This has happened before and a fuel tank draining and flushing the system solved the problem.

DO NOT believe that the pump is toast.

If in fact your tank was full of gas, the engine could have only run for a few minutes if at all, not enough time to cause catastrophic damage to the pump or injectors.

I believe that a simple draining of the fuel tank and opening of the fuel rail lines to drain the gas, will get your CRD back to normal without any long lasting issues. It has happened before.

DO not believe what the dealer said, do not replace the pump or the injectors.

We heard it all before and your case isn't unique. So purge the system, then pour a few gallons new diesel and include a good dose of power service with it. You should be fine.

:2cents:

thermorex · **Posted:** Tue Oct 07, 2014 8:35 pm

As I know also, I agree with racer, there is a sensor somewhere that would stop the engine. Not sure how this works, but I have a friend that owned a crd some years ago and also his wife put gas in the truck. He drained the tank, replaced the filter and kept driving it.

Not sure though what happened to that crd, he sold it to buy another car after few months, but the truck was running fine.

graycenphil · **Posted:** Tue Oct 07, 2014 8:51 pm

It is possible the pump and injectors were damaged; I've seen this. But it is more likely, as racer and thermorex say, that it will be fine. I've seen that much more often. And the dealers always say everything is ruined - IP, injectors, sometimes even the lift pump.

Try just draining and refilling - you've got nothing to lose.

Do you know how much diesel was in the tank, how much gas she put in, and how long it ran?

That was always my fear with the Liberty, but it never happened. More ofteen, when my wife was putting in diesel, someone would run over saying "STOP Lady, you're putting inthe wrong fuel!!"

criver · **Joined:** Sun May 20, 2012 5:56 pm **Posts:** 15

Thanks everyone. I've been considering towing it home anyway to fix it myself. It didn't stop running rather just ran really rough. I'll try purging the system and putting diesel in. Thanks.

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graycenphil · **Posted:** Tue Oct 07, 2014 9:55 pm

You probably had a lot of diesel in there still. I bet it will be fine.

Let us know. And your wife really owes you now.

Drewd · **Joined:** Mon Feb 06, 2006 12:24 pm **Posts:** 902

The CP3 pump is sturdy and should be able to survive a gasoline incident. It will be very important to drain all gas, blow out all gas from lines, drain gas from fuel rail, and return fuel line. Strongly suggest next few tanks of fuel be at least B5 and up to B20. Afterwards 8-10 oz of cheap 2 stroke oil per fuel tankful if you can't get biodiesel for increased fuel lubricity which will help your CP3 pumps lifespan. If you can't get B5-B20 than definitely put 16 oz of 2 stroke oil in your first tank of diesel after everything is drained.

I had a buddy that pumped gas in his TDI and it survived the experience and how has over 200,000 miles on it.

CobraNutt · **Joined:** Sun Feb 05, 2012 3:57 pm **Posts:** 15

Yep...drain, purge, flush as suggested. If it was still running, I'd bet good money that you'll be just fine once you get the gas cleared out.

DOC4444 · **Posted:** Wed Oct 08, 2014 9:37 am

Actually, the damage occurs when running for quite a while on a mixture of gas and diesel. On straight gas, it quickly stops and damage is rare. How long was it run on a mixture? Certainly clear it all out, change the filter and see how it runs before doing anything else.

DOC

dirtmover · **Posted:** Wed Oct 08, 2014 12:11 pm

This happens so regularly in the UK that businesses can make a living out of it:

http://www.fueldoctoruk.co.uk/

Good news- it usually ends well.
Bad news - you need to find yourself a new dealer that you can trust

papaindigo · **Posted:** Wed Oct 08, 2014 1:16 pm

geordi did a nice complete write-up on how to deal with this exact problem at viewtopic.php?f=5&t=69714

weeks101 · **Joined:** Mon Jul 30, 2012 3:29 pm **Posts:** 747

graycenphil wrote:

Try just draining and refilling - you've got nothing to lose.

Agreed. I'd be in no hurry to spend that kind of money on a new pump and injectors unless it was absolutely necessary. Not exactly a fun job, either.

kissfan79 · **Posted:** Wed Oct 08, 2014 11:39 pm

I've actually had this happen twice. I did it once and my wife did as well by accident. The first time....I started pumping gas into it and I realized it after putting about 2 gallons in it. Back then, I was really new to the diesel thing and I topped it off with diesel figuring it'd be okay (it was almost empty when I hit the gas station). It started fine and I actually drove it for a good 50-60 miles before it started acting up. The second time it happened, my wife didn't realize she was using the ethanol free gas pump which was right next to the diesel pump. She actually filled it all the way up with gas. It started but died immediately after getting out of the gas station. At the time, I was due for a timing belt and was worried I snapped the timing belt. It turns out I got it started but it ran HORRIBLY ROUGH. I figured out she put gas in it and towed it home. Both times I got up under it, pulled the filler tube from the tank, and siphoned out the gas. The second time it happened, I actually used the fuel head plunger to pump the lines free of gas and re-primed it after I got diesel in it. Both times it fired up and ran fine afterwards. Definitely look at Geordi's write up....it's good stuff. It didn't cut any fuel lines or install a pump...I pulled the filler next and ran a siphon line into the tank. Hope this helps.

Jim

JDaPP · **Posted:** Thu Oct 09, 2014 7:17 am

kissfan79 wrote:

I've actually had this happen twice. I did it once and my wife did as well by accident. The first time....I started pumping gas into it and I realized it after putting about 2 gallons in it. Back then, I was really new to the diesel thing and I topped it off with diesel figuring it'd be okay (it was almost empty when I hit the gas station). It started fine and I actually drove it for a good 50-60 miles before it started acting up. The second time it happened, my wife didn't realize she was using the ethanol free gas pump which was right next to the diesel pump. She actually filled it all the way up with gas. It started but died immediately after getting out of the gas station. At the time, I was due for a timing belt and was worried I snapped the timing belt. It turns out I got it started but it ran HORRIBLY ROUGH. I figured out she put gas in it and towed it home. Both times I got up under it, pulled the filler tube from the tank, and siphoned out the gas. The second time it happened, I actually used the fuel head plunger to pump the lines free of gas and re-primed it after I got diesel in it. Both times it fired up and ran fine afterwards. Definitely look at Geordi's write up....it's good stuff. It didn't cut any fuel lines or install a pump...I pulled the filler next and ran a siphon line into the tank. Hope this helps.

Jim

My wife did the same thing. Filled the whole tank up and it ran for about 5 minutes. Drained the tank, put a new fuel filter in and primed it. Ran a little rough for about 5 minutes and then went back to what I expected. that was 5 years and 70,0000 miles ago, no issues.

criver · **Joined:** Sun May 20, 2012 5:56 pm **Posts:** 15

UPDATE: Got the Jeep towed home after a $278 bill plus towing cost. Drained the tank, tried to flush as many lines as I could. Put 5 Gal of stove oil (all I had at the moment) bled the lines, and after several tries it started and ran fine!
I hate Dealers, why are they such nobs. This supposed diesel tech would have cost me a pile of money, and they didn't even suggest draining the tank and trying this! What a rip off!

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LibertyFever · **Posted:** Sun Oct 12, 2014 10:00 am

I think that dealership service departments aren't all crooks. They are simply quoting from the service manuals.

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papaindigo · **Posted:** Sun Oct 12, 2014 10:42 am

I almost hate to say it but in fairness to the dealer it is "possible" for a miss fueling event to cause major problems with the CP3 and other systems (on 2007 and later vehicles that includes some of the emissions systems). The chance of CP3 and other damage seems to be related to some combination of the amount of gasoline added vs the amount of diesel already in the tank as that interacts with how long the vehicle is driven after adding gasoline. Examples for a 20 gallon tank: 1) 1-2 gallons of gasoline the engine may run ok and damage is unlikely; 2) 10 gallons of gasoline the engine may run and if so run like cr$p and if run long damage, due to lack of diesel lubrication in the CP3, is somewhat likely; 3) 18 gallons of gasoline the engine probably won't run long enough to exit the station and damage is unlikely.

Hence while damage is "possible" it is not necessarily "probable".

This is where the dealer failed the normal/common sense procedure test either due to a subconscious :ROTFL:

or conscious :banghead:

reflex desire to throw expensive parts at the "possible" problem. That's just plain silly or stupid. In this situation the normal/common sense procedure is identical regardless of whether the CP3 is or is not damaged. Hey stupid drain and flush the fuel tank and lines as that HAS to be done and is the only sane first step to addressing the problem. Once that's done the vehicle will either crank and run or it won't. If it cranks and runs it might?? be worth pressure and flow testing the CP3 and injectors just in case. If it doesn't crank and run then and only then should CP3 and injector be investigated.

I've never done the miss fueling at a filling station but at age ca. 8 when my Dad was home for lunch I decided to "help" him by using a garden hose, hey it "looked" like the filling station hose, to fill his 1955 Chevy BelAir fuel tank with water. Vehicle ran like 10 seconds but once drained and flushed it was fine, not sure my butt was though.

Gas in a diesel

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