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⚡ Inject power, smoothness, and efficiency into every drive!
Liqui Moly 1803 Injection Cleaner is a 300ml liquid formula designed to clean petrol injection systems by removing carbon and fuel deposits. It enhances engine performance by eliminating starting issues, rough idling, and power loss, effective for up to 70 liters of fuel or 2,000 km. Made in Germany, this top-rated cleaner delivers noticeable improvements in fuel economy, acceleration, and engine smoothness.







| ASIN | B0096Y6OII |
| Best Sellers Rank | 363 in Automotive ( See Top 100 in Automotive ) 18 in Fuel Systems |
| Brand | Liqui Moly |
| Brand Name | Liqui Moly |
| Contains Liquid Contents? | Yes |
| Country of Origin | Germany |
| Item Form | Liquid |
| Item Volume | 300 Millilitres |
| Item Weight | 0.3 Kilograms |
| Item form | Liquid |
| Item volume | 300 Millilitres |
| Manufacturer | Liqui Moly |
| Material Features | Unscented |
| Material feature | Unscented |
| Model Number | 1803 |
| Number of Items | 1 |
| Part Number | 1803 |
| Scent | Liqui Moly |
| Size | 300 ml (Pack of 1) |
| Special Features | Car |
| Specific Uses For Product | Engine |
| Specific uses for product | Engine |
| Surface Recommendation | Metallo |
| Unit Count | 300.0 millilitre |
G**Y
Made emissions WORSE
Wouldn’t reccomend this product, should have stuck to the Wynn’s cleaner I’ve always used in the past. Ford Duratec HE 1.8 engine, had never failed an emissions test before. Regularly use cleaners to maintain performance. 2 weeks after using this and car completely flunked MOT emissions test for both CO and hydrocarbons. Now I’m stuck with a huge garage bill to investigate and fix the problem. Thanks Liqui-Moly. Never again!
S**R
Possible engine damage
Do not use this additive. Possibly causes engine damage. Engine did not run well with this . Noticeable loss in power and smoothness. As soon as fresh fuel was used the engine ran perfectly again.
K**H
Didn't work for me
My car was having problems making strange noises as soon as I used this the car died and won't start any more.
A**A
Okay but good for me
Not good for me
M**S
jury is out
Jury is out on this
P**T
Couldn't open it
I sent the item back.
R**O
Don’t bother !!
Absolute rubbish !! Waste of money, didn’t make a slight bit of difference, be better off with a redex
A**S
My Long review but worth reading. It’s great. Very affordable and works!!!
I’ve had 4 of these. My engine was replaced. Timing chain failure. New block but reused all the old injectors and other external parts. My injectors possibly became dirty and I’ve had a misfire in cylinder 4 for around 8 months. Sparks repacked and coils were checked they all worked fine. So injector was my 3rd option to check. I tried this injector cleaner 4 times so far. After the first time I noticed less shaking In the engine, the second time my misfire was almost gone. 3rd time I noticed the car was running smoother than it ever has. The 4th time was a precaution as I get the odd shake here and there but not a misfire. I know my injector was really dirty. This may have really worked on my car. I’m going to buy another 2 to use for the next 2 full tanks of fuel I put in just for added benefit. Then I’m going to use 1 bottle on the 1st of each month until I notice the car is working at its best. After that I’ll use it on the 1st of the month every 2 or so months. The price of the bottle justifies everything. It’s cheap enough and does the job really well. I’d recommend.
A**I
Gut 👍
GgEine gute Möglichkeit, das Auto zu reparieren, ohne es zu zerlegen und ohne Geld auszugeben. Vor diesem Mittel lief der Motor rau, unruhig bei niedrigen Drehzahlen, ich musste dieses Mittel in den Tank gießen und 50+ km fahren, da der Motor begann, glatter, leiser und weicher zu laufen. Ich bin zufrieden, ich empfehle es!
V**P
Italian tune-up
私の車は直噴エンジンを搭載しており、特に燃料品質が悪い場合、カーボン堆積が深刻化することで悪名高い。 様々なガソリンスタンドで給油せざるを得ず、時間の経過とともにエンジン状態が悪化していくのを実感した。そこでこの製品を購入し、まずほぼ空のタンクに添加した後、高品質燃料を提供していると確信しているスタンドの新鮮な燃料で満タンにした。 最高の効果を得るには「イタリアン・チューンアップ」と呼ばれる方法が必要です。つまり、数分間ずつエンジンを激しく回転させ、数回加速を繰り返すことです。これにより添加剤が十分にインジェクターに到達し、スラッジを燃焼させるのに十分な熱が発生します。高速道路を1時間走行後、エンジンの調子が改善されたのを実感しました。今後は3ヶ月ごとに使用します。
M**�
Très bon nettoyant injecteurs 👍
Nettoyant injecteur acheté suite à quelques ratés de combustion qui étaient assez réguliers. A rapidement fait effet après avoir utilisé le produit. Je n’ai plus de ratés et ce, même après avoir déjà roulé plus de 1000km après avoir terminé le plein dans lequel était le produit. Concernant une économie sur la consommation, je n’ai rien remarqué de particulier. Je recommande donc ce produit si vous pensez avoir un léger dépôt dans vos injecteurs. S’ils sont complètement bouchés, il faudra certainement plutôt faire un nettoyage dans un bac à ultrasons ou les changer. Le rapport qualité/prix, comparé à d’autres marques est très bon!
م**د
جيد
جيد
E**E
sempre ottimi prodotti
liqui moly sempre ottimi prodotti l ho aggiunto ad ogni rifornimento e il motore è migliorato molto.. consigliato
Trustpilot
3 weeks ago
3 weeks ago