You need another mechanic, perform a cylinder leak test nd confirm if/where there is a mechanical issue with engine..

 

X2 to find another mechanic. Is your check engine light on with the key on, and off once the engine is running? If so, what codes is the ECU finding? And what was the compression numbers your mechanic found??? Is the engine shutting off only when yo are going uphill???

 

"Problem with compression" is a very vague statement, it tells us nothing, for us to be able to assist you, we will need details - dry & wet compression test numbers, cylinder by cylinder would at least give us a starting point. IF those numbers reveal a "problem with compression", then a cylinder leak down test might be advised to better determine where the problem lies.

 

Thank you all for the answers.

This "Problem with compression" was diagnosed by the official Suzuki mechanic in my country (at the end of January this year). I only got the info by phone after I bought the car. In a few weeks I'm taking the car again there to get a new diagnostic and get a full report and I will write here. From what I've been told the engine would need to be opened and that would take days.

No "check engine light" comes out and the car only shutting down uphill on very low speed.

What's interesting is that official Suzuki mechanic in my town like month ago didn't find anything wrong with the car when he performed diagnostic.

Several mechanics told me not to drive the car and only to drive if necessary, not to turn on the air conditioning and to drive only on petrol and not on LPG.

What advise would you give me? I never force the car, I'm a family man and drive with speed max 90 - 100 km/h.

 

Personally, if it was me, I’d get the ‘full report’ and post it here and not let anyone ‘open the engine’ to do anything until you actually determine what the issue is. If this was a car i planned to keep, I would also consider getting my own scanner, so that I could get real time data from the computer, rather than relying on others who may ot have my best interests at heart. I’m not terribly familiar with LPG, so again, my opinion, I’d run it on petrol. Is the mechanic who found the problem with compression the same mechanic that said he could find nothing wrong last month?? A compression test is pretty easy to do…do you have any friends who are ‘backyard mechanics’ who’d be able to do a compression test for you so that you could post the results of that??

 

The mechanic who found the problem with the compression is the official Suzuki mechanic from the official Suzku store where the car was originally bought from the previous owner. The mechanic who said that there is nothing wrong with the car is my local Suzuki mechanic. So 2 different mechanics.
And the 3rd mechanic who was doing a service 0n the LPG system told me that the car might have problem with a cylinder due to the engine shacking and advised me to go to the official Suzuki mechanic to check the engine.
I could check for some friend who can do a diagnostic on the car.
Later I can post a video how the engine is shacking.

 

Trying to diagnose an unclear problem remotely in a discussion group is not a good approach.

The main task is to find out whether the car was defective at the time of sale—in which case there would be hope of withdrawing from the contract.

 

I’m not sure what engine ‘shacking’ actually means, but unless you do the compression test (wet and dry) you have no idea what these mechanics are supposedly seeing with your engine. Do the compression test and post your results.

 

I’m not sure what engine ‘shacking’ actually means

Probably means 'shaking', i.e. running roughly.

 

This is video of the engine and the back.

Also a picture of the dashboard this morning. When I was coming out of my garage the car just turned off (like it is doing when driving uphill) and this is what is shown.

 

That's a fairly pronounced "knock" and I'm going to say that there's likely a lot more wrong with it than just a "compression problem" - I'd be exploring my options to either return the car for a refund or having the engine repaired or preferably replaced under warranty.

 

One cylinder is misfiring – rather than giving advice here, quickly consult a specialist. From a cracked cylinder to a problem with the valves... or just the injection or ignition – anything.

 

That is more than just a misfire.

 

Oh yeah, that sounds nasty, that's no misfire. I'm betting low compression and possibly detonation damage from running it on LPG with no upper cylinder lubricant. That needs a borescope inspection at the very least after a compression test. I wouldn't be driving that anywhere

 

I scheduled a diagnosis at the main Suzuki dealer in my country at the beginning of next month and need to drive 180 km one way (with some parts of the road being mountain ride uphill). They will only do the diagnostic and I will need to wait for weeks or maybe months for repairman.

Since I bought the car beginning of March I made 2200 km so far which is not so much and I always drive around 60 - 70 km/h and mainly with 2nd gear city drive and 3rd and 4th gear on open road and always at 2500 - 2800 rpm.

Given this will the car be able to hold the 2 x 180 km drive at the beginning of July?

My local Suzuku mechanic (who didn't find anything wrong with the car when he run diagnostic 2 months ago) which is few km from where I live advised me to take the car to main Suzuki dealer.

 

This is just me, but I would rather not drive a vehicle with the engine knocking like that.

 

Maybe during the 180 km drive the knocking will stop and leave the broken bits on the ground. ??? ( along with a nice inspection hole in the block?)

 

Was the engine making this noise when the local Suzuki mechanic looked at the car?

 

Yes.

 

It seems that the mechanic you originally brought the car to, at least the one you reference in your first post, had seemed to have a better idea as to what might be the issue with the car. Is he closer to you than 180km? It might be an idea to take the car to him? Just because someone is a ‘Suzuki’ mechanic doesn’t mean that they’re a good mechanic. The mechanic in your first post was concerned about what he was hearing/seeing.

 

Update.

I drove the car 180 km x 2 = 380 km to the main Suzuki mechanic. They did the compression test and the results are the following.
The values from the first to the fourth clip:
1st = 14 (kgf/cm2) / 2nd = 5 (kgf/cm2) / 3rd = 11 (kgf/cm2) / 4th = 13 (kgf/cm2).
The compression in the second cylinder is very low and this is the reason for the uneven work of the engine and the shacking of the engine.

Parameters for compression are:
Standard compression is 16.3 (kgf/cm2)
Minimum compression is 13.3 (kgf/cm2)
Maximum allowed difference in compression between cylinders is 1.0 (kgf/cm2)

I've scheduled an engine opening for the end of this month at the main Suzuki mechanics. They advised me to remove the LPG Landi Renzo gas system as this is probably the cause for all this.
At the end I will probably remove the LPG gas system there at Suzuki mechanic as they said that it's best the same mechanic that will open the engine to remove the LPG system as well.

 

The engine is fixed. They changed the valves and bunch of other stuff.
Final cost is 1900 eur.

 

Thanks for reporting back. And glad you’re issue has been sorted.