I shouldn't have used Walmart fuel cleaning service

[Cmobile]

Tank was full.

I use top tier since I've owned it, but only inherited it a few months ago. It was severely short-tripped, but had 6mo/4k oil changes. Made sure my parents did that much. They bout it with 20k on the odometer in 2022, I got it at 43k and it now has about 49k mi.

No CEL, sensor readings appear normal. Hasn't had starting issues all day with multiple starts.

Hope it was just junk on the MAF. I'll clean it this weekend for good measure.

 

[rijndael]

How important is it in most engines to get intake runners all that clean?

It depends if it's the type that has actuators (IMRC).

 

[D60]

Many years ago 1991 a local shop used a fuel injector service that if I remember correct consisted of a can of cleaner attached to the fuel line or system somehow so the car actually ran on that can of cleaner for a bit.
I recall it made a noticeable improvement.

Does any one know IF that direct connected cleaning systems still exist and can you still use that style "pro" cleaner on cars made today?

There's a slim chance such things still exist:

D

Post in thread 'Subaru FB25 - misfires and O2 sensor?'

Feb 4, 2024

CONCLUSION: bad gas! I should have entertained this possibility sooner, although the owner is.....interesting. I didn't fully trust his story coupled with the fact I use the same station A LOT and would have filled within days of him on either end.

It ran great on my Lang top end cleaner bootied onto the supply line.

Next question: is there a good way to trigger the fuel pump absent a tach signal? I don't see a fp relay but sure would be nice to make the pump do the heavy lifting. The fuse is always hot (like my wife as someone else would say)

• D60

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D

Post in thread 'What are you working on today?'

Apr 30, 2025

Top end cleaning on 2008 Escalade 6.2.

I opted to supply through the Schraeder valve. This blanking cap was the bomb diggity to cap the usual supply side

clinebarger was kind enough to point me at the correct fuse as the Caddy 6.2 doesn't use the 5.3 fuel pump fuse or relay, but the fuse box is labeled for both engines.

• D60

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[RobbS]

Two bottles in fuel tank each oil change. Fill up with top tier 93 octane.
REDLINE, Techron , BG 44K, all perform fantastic.