Mannol 400ml Intake Valve Cleaner

Had a problem with my Ford C-max. Irregular idling revs. Very sluggish uptake if you slowed in second gear and then tried to accelerate again in same gear (which you do all the time in London!). Also issues with it spluttering and stalling at junctions and when reversing into parking spots.This product did exactly what I hoped it would do. Sprayed it into the throttle valve and I wiped away the deposits I could see. Image 1 is before, image 2 is after obviously. Gave it a good spray inside the throttle body too to be sure.Here’s a tip, don’t push the valve open manually if it’s electronically operated as that has the potential to damage. Instead turn the ignition to power on (don’t start the engine), then brace the accelerator pedal hard down inside the car to open the valve.The engine will be a bit rough immediately after treatment. I had revs spiking erratically and lots of spluttering. I thought I’d messed up, but it just needed a short run to settle everything down.Back to the product. It’s great stuff! Having used it it’s like driving a different car!!!Seller was great too, despatched promptly, no issues!

This product does what it suppose to. I recommend getting two or more depending on what you need it for.I got one to clean a throttle body and by the end of it the bottle was finished.

Did the job of cleaning my EGR valve

This worked well, leaving a lovely clean throttle valve.I only know this as I had to take apart the intake to investigate a problem after using this.Turns out there is a small clear nozzle at the end of the tube that is supplied. I didn't see this when pushing the tube in but the nozzle came off of the tub and fortunately was caught by the valve.It's on me rather than the product (although making the nozzle not clear would be an idea) but thought it worth pointing out to ensure no one does the same as me but is less lucky with the results

Used it. May have worked, but unless you strip off the entire induction manifold to inspect the back of the inlet valves, it's difficult to say. I suppose if you had one of those newer cost effective endoscopes, you might be able to do a before and after on the back of the inlet valves. There seems to be a fair bit of positive reviews on the ' net.

Good stuff, worked well.

Ideal for intake product cleaning.

use this for long time and work realy well