How much pressure did you read from 1st cylinder?

@@tuanla1879 I can’t recall the figures but cylinder 2 & 3 were very similar, cylinder 1 was noticeably less.

@@gavinhollyer4640 Thanks for your reply. "Noticeable less" is about 50-ish psi or greater? My reading was not reliable and the different is about 25psi. I will have another ready later this week.

@@tuanla1879 Cylinder 2 & 3 were reading within a few psi of each other, very consistent, but cylinder 1 was only about 20psi lower. Not a massive amount but it was obvious that something was different in cylinder 1 because 2 & 3 were giving very consistent results.

@@gavinhollyer4640 Thank you. Will check mine and post the result here.

and dont fix anything that is not broken 😆

how do you know about vales and camshaft lobes but would have never thought literal rod knock would be the rod.... have a laugh

Totally agree this looks like a classic case of flood damage something has to give with water in the cylinder and conrod is the weakest link.

Good reply very helpful 😎👍

Bet your daughter is glad she has a dad who is mechanically inclined.

Fantastic engines but very ticky

I bet more than 90% of engine "noise" complains. Would be swiftly solved with a decent synthetic oil and filter change. I've seen it countless times during the past 3 decades! Just this past week I've seen it twice! About this video, excellent. Damn that's a LOT of patience to look for the culprit. Kudos for that! ;-) Cheers

@@crpth1 The oil isn't the culprit. ·EG-0096T-0714 "KR Engine knocking noise" (23.07.2014, piston set and cylinder block replacement: 11401-40041 ⇒ 11401-40060, 11401-0Q011 ⇒ 11401-0Q030, 11401-40050 ⇒ 11401-40070)

@@alessandroserrao9422 - You're referring to the well known issue of these series engines. ;-) Please refer to the OP text. Different subject, in spite of being a noise. Oil type and quality are in fact the main responsible for engine complains (in general). As mentioned I've seen it too many times in the past 3 decades. In fact little more than 35 years! People tend to look at the cheap oil price tag alone. The real payment will come later down the line... Don't even mention the one's that skip oil changes to "save" money! ;-)

That engine is filthy for 40k miles. Probably never had its oil changed since new. Cylinder one always get oil starvation first. Was the oil control ring still moveable on piston one? Bet it was stuck fast. One of the first signs of oil starvation on these. The more the piston rubs and wears the cylinder liner down the more off angle it gets until it bends the conrod. So I think lack of any maintenance killed the engine, rather than a failure of the engine itself.

@@gavjlewis my 1kr has suffered the same fate. The first cylinder has more deposits on it and she's consuming about 150ml of oil in 1000kms. There's blue smoke on hard revving after warming up and a lot of piston slap in these cold winters.

No

Just had this knocking problem arise on startup after a drive without issue, oil level was at the required level (low) and everything else in order! 44k miles Aygo.

This engine is known to be very reliable. The C1/Aygo/107 are very simple cars in comparison to many modern cars. Any problems are well documented on KZfaq & the forums with a lot of support & fixes published too

I just bought yesterday for my son, C1 has now 97k on the clock with no engine problem.

@@sammyranesesgrospe7361 Thanks for taking the time to reply. He actually bought it and has been driving all over. I actually really enjoy driving it too lol

I bought my daughter one at19k miles, 10 yrs later not a thing ever gone wrong but engine has always sounded ticky when cold. As soon as warm it goes. Doesnt consume any oil, does 60mpg and now done 100 k and going strong

Client just rolled in with similar problem, driver states when we were on automatic csr wash engine started to knock. Well did turn off the engine? What for?......

hydro lock

5w50 убьёт двигатель!

Most of those engines last hundreds of thousands of miles, they are one of the best engineered engines around. Yes with lack of maintenance you get piston slap, maintain your engine and use the right oil.

@@donaldasayers No. Piston slap on 1kr-fe toyota engines is present also in new engines. Maintenance doesn't mean nothing. And there's a tsb from toyota: ·EG-0096T-0714 "KR Engine knocking noise" (23.07.2014, piston set and cylinder block replacement: 11401-40041 ⇒ 11401-40060, 11401-0Q011 ⇒ 11401-0Q030, 11401-40050 ⇒ 11401-40070) toyota-club.net/files/faq/19-10-20_faq_kr-engine_eng.htm

@@donaldasayers Also 1kf-fe is a badly engineered engine: Piston slap is a well-known phenomenon. Since the defect appeared even on the new cars (so non-roundness was a consequence of production defects but not wear), it was treated by warranty-covered replacement of the cylinder block and pistons/rings (mentioned in one of the service campaigns). Usually, an engine with such a defect can operate for a long time, and it is more economical to replace it with a second-hand engine after a complete failure. • Cylinder liner and piston scratches (the sound effects are accompanied by an impressive oil consumption). In Southeast Asia, the repairers prefer to rebore the cylinder for 0.5 oversize pistons, without cylinder liners replacement. • Piston ring stuck due to carbon deposits, timing chain wear, water pump leaks are commonplace, and KR is no exception. • Mainly due to EGR (with a little "help" by the crankcase ventilation), the entire air intake pathes, valves, seats and combustion chambers are reliably supplied with soot. Also, in terms of the amount of solid deposits and oil sludge in the crankcase, under the head cover, in the separator etc. - KR engine is one of the dirtiest engines of Toyota corporation. • The imbalance of the 3-cylinder engine only partially hides by its modest mass and developed mounts. However, with any deviation from the normal operation or idle speed dropping, it turns into a shaker. The recommendations are traditional - flushing the throttle and "re-adaptation", then cleaning of the intake duct, then mounts replacing, etc.

@@alessandroserrao9422 Don't know what engine you are referring to but the CityBug engine has cast in cast iron liners that cannot be replaced.

@@donaldasayers Toyota 1kr-fe that's the one in the video. No you have to replace the entire cylinder block as per tsb ·EG-0096T-0714 "KR Engine knocking noise" (23.07.2014, : 11401-40041 ⇒ 11401-40060, 11401-0Q011 ⇒ 11401-0Q030, 11401-40050 ⇒ 11401-40070) that is really a bad engineered engine