[ApFiore]

Tonight I filled my 1g meth tank at the gas station and drove about a mile before I started to get some very odd engine feedback which turned into a CEL and some major engine shaking then a drop in power.

Pulled over and for some reason my meth controller had malfunctioned and sprayed almost half a gallon of meth over the 1 mile or so drive at 30ish MPH.

I immediate pulled the plug on the pump and waited about 5 min. Fired it up and it was running really rough. Had to get off the highway so limped back to the gas station.

Parked at the gas station and let it sit for about 15min. Fired it up and it sounded somewhat normal. Alittle hesitation until a normal idle but seemed ok running for about 10 min.

Decided to drive it home and it was seemingly normal although I babied it all 30 miles home.

CEL is still on but it seems to be “normal” at the moment.

What type of diagnosis/service check etc can I do to make sure everything burned off and I didn’t do any permanent damage?

Needless to say im going to be looking for a new meth controller or possibly removing the entire setup.

Thanks for any info or advice.

[pbonsalb]

Nothing you can do short of a leakdown test. But I would probably change the oil since most of the extra fuel probably washed the walls and ended up in the sump.

[MTHX]

Originally Posted by ApFiore

Tonight I filled my 1g meth tank at the gas station and drove about a mile before I started to get some very odd engine feedback which turned into a CEL and some major engine shaking then a drop in power.

Pulled over and for some reason my meth controller had malfunctioned and sprayed almost half a gallon of meth over the 1 mile or so drive at 30ish MPH.

I immediate pulled the plug on the pump and waited about 5 min. Fired it up and it was running really rough. Had to get off the highway so limped back to the gas station.

Parked at the gas station and let it sit for about 15min. Fired it up and it sounded somewhat normal. Alittle hesitation until a normal idle but seemed ok running for about 10 min.

Decided to drive it home and it was seemingly normal although I babied it all 30 miles home.

CEL is still on but it seems to be “normal” at the moment.

What type of diagnosis/service check etc can I do to make sure everything burned off and I didn’t do any permanent damage?

Needless to say im going to be looking for a new meth controller or possibly removing the entire setup.

Thanks for any info or advice.

what is your nozzle size?
where are they located?

For the engine blup blup, go away after a little ride normally (without meth) and change your oil soon.

maybe you are injecting too much at low boost.
try to push meth at 19 / 21 psi at starting point,

[ApFiore]

Originally Posted by MTHX

what is your nozzle size?
where are they located?

For the engine blup blup, go away after a little ride normally (without meth) and change your oil soon.

maybe you are injecting too much at low boost.
try to push meth at 19 / 21 psi at starting point,

It’s a burger meth kit, so whatever nozzle size that is. It’s run fine since install about 2 months ago. I went away from the JB4 controller that came with it though and am using an AEM unit that apparently works off of system voltage.

Two knobs that range between 0-8. First knob controls voltage of when the spray starts and second controls when spray stops. They have always been at 3/7 but somehow last night they were moved.

Not the fault of the controller apparently but still a really dumb setup and not sure why my tech decided to install this specific controller. I’m going to get it swapped out for something alittle more user friendly.

[pbonsalb]

The great thing about the BMS controller is that it ties into the OBD2 and has safeguards. I wish it also had flow control like Aquamist HFS4, but it is still probably safer than any other.

[AngryInch]

Lucky you didn’t bend a rod. Do a compression test.

Cylinder walls would have been washed off of oil. Could have potentially caused some damage there. I’d check with a scope in the spark plug hole.

Like others said. Change that oil right away.

[ApFiore]

Thanks guys. Car is in for oil change and going to have them look into everything suggested

[Aronis]

wow, meth injection not worth the headache.

I have to deal with the other Meth too often at work.

Mike

[Jakerx]

Originally Posted by pbonsalb

…since most of the extra fuel probably washed the walls and ended up in the sump.

Can you explain how this would have happened?

[pbonsalb]

Meth is fuel like gasoline, but rather than being precisely injected into only the cylinders in which the pistons are near top dead center, it is fogged into all cylinders simultaneously. Engine stumbles because more meth/fuel than can be burned under these circumstances—when the meth flow is faulty and uncontrolled. Probably some of the extra just blows out the cylinders with the open exhaust valves but enough meth is in some cylinders at times and not being burnt that it leaks past the piston sealing rings and washes down the cylinder walls.

[Jakerx]

Originally Posted by pbonsalb

Meth is fuel like gasoline, but rather than being precisely injected into only the cylinders in which the pistons are near top dead center, it is fogged into all cylinders simultaneously. Engine stumbles because more meth/fuel than can be burned under these circumstances—when the meth flow is faulty and uncontrolled. Probably some of the extra just blows out the cylinders with the open exhaust valves but enough meth is in some cylinders at times and not being burnt that it leaks past the piston sealing rings and washes down the cylinder walls.

Thanks for the explanation. I understand what meth is, I’m just surprised that any meth or other fuel would make it past the piston rings in an engine that is only a few years old at the most. I guess an oil change is cheap insurance, though.

[pbonsalb]

Send the oil out for an analysis and see what is in it. Maybe it all went out the exhaust valves. But in general the concern with running too rich or investing water or excess meth flow is that it ends up in the oil. You wrote that you used 1/2 gallon in 1 mile at low load driving so that is a huge amount of extra fuel.

I have tried to free up motors before that have sat for a long time by spraying penetrant and pouring oil into the cylinder. The oil does not stay long. It seems to pass through the rings. I would think fuel would go through faster.