All Replies on Harbor Freight HVLP gun full of goop

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View Mainiac Matt 's profile

Harbor Freight HVLP gun full of goop

by Mainiac Matt
posted 07-16-2017 04:27 PM

4 replies so far

View MrUnix's profile


8216 posts in 3056 days

#1 posted 07-16-2017 04:40 PM

Yes, it comes with goop in it everywhere, and yes, you need to clean it out before using it (even states that in the manual). After that, you are good to go. The only place I will use some teflon tape is where the cup attaches to the gun… that little plastic bushing doesn’t really seal the connection very well, and it will dribble paint without any additional sealing if you don’t.


PS: They currently (July 2017) have a coupon online for them, good until the end of the month, for $9.99. Coupon code #16231253 in case the coupon disappears :)

-- Brad in FL - In Dog I trust... everything else is questionable

View BlazerGator's profile


25 posts in 2046 days

#2 posted 07-16-2017 05:18 PM

Hi, Matt—

Cleaning it was a good move. Mine didn’t have much goop in it, and it cleaned up fairly easily. I only added teflon tape where the air chuck is attached. I wouldn’t worry about the internal seals unless you have an issue in use. The sprayer has worked without trouble for me; of course, my needs are not terribly demanding, hence the inexpensive gun.

I suggest putting some of your cleaning solution in the cup and shooting it to catch any leftover goop you couldn’t reach. Take your time to get comfortable with the spray adjustments, etc., and I think you’ll be good to go.

Take Care,

-- Blaze

View Mainiac Matt 's profile

Mainiac Matt

9658 posts in 3185 days

#3 posted 07-16-2017 05:47 PM

I was expecting the innards to be coated with some type of oil or grease, but mine had rubbery white stuff in it

-- Matt -- I yam what I yam and that's all what I yam

View DS's profile


3550 posts in 3277 days

#4 posted 07-17-2017 03:41 PM

I ended up cleaning mine twice before getting satisfactory results.
Admittedly, I didn’t expect that much goop inside and just did a cursory cleaning of the nozzle area at first.

The fish-eyes were incredible. Had to dismantle the entire unit, clean and reassemble.
But hey, it works well and was incredibly inexpensive.

-- "Hard work is not defined by the difficulty of the task as much as a person's desire to perform it.", DS251

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