Kreen fixed my cel

[wisdav1]

HI guys,

My truck,a 2004 silverado,with the 5.3, 95k. Has been triggering a
check engine light, every 30 to 40 mi.for the last 2 years. My scan
gauge shows code 420&430.
I put 16oz in the engine and 16 oz in the tank.
So far 600 mi and no cel,hope that cured it for good.

 

[electrolover]

What are the codes? What are they implying is wrong?

 

[LeakySeals]

Catalyst efficiency codes on both cats, both sides of a v8 at the same time (P0420, P0430)?? That would indicate running rich overwhelming both cats. Did you clear the codes or did they go away on their own?

 

[Vikas]

that is pretty amazing; those codes are pretty tough to fix (permanently) via chemicals in the tank.

 

[wisdav1]

Leaky
I cleared the codes with my scan gauge. I know them codes are
hard to get rid of.
So far so good

 

[Trav]

Keep us posted on this if you would. After 600 mi and no codes returned its doing pretty good.

 

[electrolover]

Very interesting. I look foward to see if its long term

 

[SteveSRT8]

Originally Posted By: wisdav1
HI guys,
My truck,a 2004 silverado,with the 5.3, 95k. Has been triggering a
check engine light, every 30 to 40 mi.for the last 2 years. My scan
gauge shows code 420&430.
I put 16oz in the engine and 16 oz in the tank.
So far 600 mi and no cel,hope that cured it for good.


We own many GM fleet trucks and have found a bit of Kreen in the fuel quickly cures carbon knock. It will also help with the problematic PCV orifice that usually clogs as the engine ages!

Kreen works. Now.

 

[Vikas]

does scangauge have an ability to give you i/m data or pending codes? It is highly unlikely to have an incomplete test after 600 miles or have a pending code for 600 miles but would be nice to be certain of it though.

 

[Phishin]

I had the P0420 code and CEL stuck on in my Altima for 2 years. Never went off.

I put two bottles of Gumout Regane in the tank and a 1/4 tank in, they have disappeared. No CEL for the past 3 months, 6k miles. I can see how Kreen could clean up the CAT as well.

My P0420 came on after putting Lucas UCL in the gas. I think the Regane (PEA) cleaned the residue off the CAT material. JMO.

 

[Turk]

Oh, but many will tell you it's snake oil!

Good job.

 

[demarpaint]

Originally Posted By: Turk
Oh, but many will tell you it's snake oil!

Good job.

EXACTLY..........

I'm glad it worked and saved you money, thinking out of the box pays off sometimes.

 

[Mystic]

A lot of people say that MMO and Kreen works. Still waiting to hear about all the ruined engines.

 

[TuBon_gRips]

Originally Posted By: Mystic
A lot of people say that MMO and Kreen works. Still waiting to hear about all the ruined engines.


Kreen is slowly ruining my engine...






...by not being available in California.

 

[electrolover]

I just ordered two qts today. Pretty happy about it.

 

[skyship]

Originally Posted By: Turk
Oh, but many will tell you it's snake oil!

Good job.

Some fuel additives work quite well, but I would do some research into which one is best for this particular problem. A good blast down the highway on a Sunday often cleans out the exhaust system, but if you use poor quality fuel then major brand fuel additives (BG, Lubriguard, Liqui Moly etc) are a good idea. It's even possible if Cat trouble is common the engine manufacturer will have recommended a specific fuel additive.

 

[TuBon_gRips]

Originally Posted By: electrolover
I just ordered two qts today. Pretty happy about it.

Hmm... is :finger: a thing here? j/k just take some before and after shots, preferably with the VC off, and we'll call it good

 

[electrolover]

Oh man its a pain to pull the vc on my truck! Im not saying no.....how bout maybe.

 

[Trav]

Originally Posted By: electrolover
Oh man its a pain to pull the vc on my truck! Im not saying no.....how bout maybe.

I don't like doing them on a 5.4 even when paid to remove them. No way would i R&R one that wasn't leaking just for a look see.

No one thats ever seen one would expect that from you.

 

[matrass]

Originally Posted By: SteveSRT8
Originally Posted By: wisdav1
HI guys,
My truck,a 2004 silverado,with the 5.3, 95k. Has been triggering a
check engine light, every 30 to 40 mi.for the last 2 years. My scan
gauge shows code 420&430.
I put 16oz in the engine and 16 oz in the tank.
So far 600 mi and no cel,hope that cured it for good.


We own many GM fleet trucks and have found a bit of Kreen in the fuel quickly cures carbon knock. It will also help with the problematic PCV orifice that usually clogs as the engine ages!

Kreen works. Now.



Sounds like you have had good results with Kreen in the gas. are you using the 16 oz dose in a full tank ?