[William frijters]

Cfmoto terralander 800. Cilinder twee loopt niet mee. Als hij loopt kan ik bougie kop eraf trekken injector losgooie. Hij blijft hetzelfde lopen. Heb wel vonk en benzine.
Injectoren beide vervangen. Gasklepsensor map sensor en bobine en bougies vervangen.
Storing p0118 s staat in. Dat is de  koelwater sensor. Maar kan niet geloven dat ie hier zei slecht op loop.
Heeft iemand een idee wat er loos is.
Vr nr William frijters

[doug80638]

Cfmoto terralander 800. Cylinder two does not run. When it runs I can pull the spark plug head off and throw the injector off. He keeps walking the same. Have spark and fuel.
Replaced both injectors. Throttle position sensor map sensor and coil and spark plugs replaced.
Fault p0118 s is in. That's the coolant sensor. But can't believe he said bad running here.
Does anyone have an idea what's going on.
Fri no William Frijters

[doug80638]

Heb je een compressiecontrole uitgevoerd?

Have you performed a compression check?

[William frijters]

Ga ik morgen doen. Komt dit vaak voor geen of te weinig compressie.

[William frijters]

Ga ik morgen doen. Komt het vaak voor te weinig of geen compressie

[doug80638]

"I'm going to do tomorrow. This often occurs with no or too little compression."

Good.  That's the first step. Let us know what you find.

[William frijters]

5 bar compressie. Beide cilinders. Nogmaals nieuwe bougies gezet

[doug80638]

"5 bar  (73 PSI) compression. Both cylinders. Put new spark plugs again"

OK. That's a serious problem.  Compression should be closer to 10 bar, or 145-150 PSI.  The service manual calls out for 1000Kpa.

So, all the new spark plugs and injectors in the world are not going to help.

You'll need to pressurize the cylinders (one at a time) at top dead center, and check for leaks in the intake and exhaust valve ports, and from the engine crankcase (rings) to find out where you are losing compression.

Valve leaks are usually fairly easy to correct assuming the timing hasn't gone out of specification and the valve train is sound. Always good to check the valve lash first. If that doesn't address it, lapping the valves to reseat them is next. If that doesn't fix it, time for a machinist to rebuild the head.

Bad rings or cylinder walls will take a bit more effort.

Good luck!

[William frijters]

Ga morgen met een andere meter testen. Die je ver echt in schroef . Had nu een rubber dop die je in het bougiegat houd. Ik hou jullie op de hoogte.

[William frijters]

Cilinder 1 8 bar compressie. Cil 2 5 bar. Cilinder gedemonteerd. Cilinder kop de kleppen lektest gedaan, deze zij oké. Bij de zuiger zat de bovenste zuigerveer op een plek vast in de zuiger. Besloten om twee nieuwe cilinders en zuigers te plaatsen.

Heeft iemand een plaatje waar de merktekens voor de timing te zien zijn.
Heb wel kerkjes gezet maar zou de oorspronkelijke tekens graag gebruiken

[William frijters]

Bovenste zuiger op een plek vast in de zuiger.

[doug80638]

<translated>

Cylinder 1 8 bar compression. Cyl 2 5 bar. Cylinder disassembled. Cylinder head, the valves leak tested, they are ok. On the piston, the upper piston ring was stuck in the piston in one place. Decided to put in two new cylinders and pistons.

Does anyone have a picture of the timing marks?
Did put churches but would like to use the original characters

What year is the machine?

You might find an appropriate manual at:

        https://www.motorcyclemanuals.info/motocycles-atvs/cfmoto/

[William frijters]

Hallo nieuwe update.
Beide cilinderkoppen 100%.
Echter cilinders beide slechte staat. Veel groeven erin.
Heb twee cilinders besteld. Echter deze cilinders zijn denk ik van model later.
De cilinderwand het blok in is 3mm korter. Zou ik deze kunnen monteren
Translation:
Hello new update. Both cylinder heads 100%. However cylinders are both in poor condition. Lots of grooves in it. Ordered two cylinders. However, I think these cylinders are of a later model. The cylinder wall in the block is 3mm shorter. Could I assemble these?

[doug80638]

We may have lost something in the translation.

Are you saying that the new cylinders are not the same dimensions as the originals? (Not as tall?)

Or are you saying that the the hole in the block that the connecting rod passes through is a smaller than the diameter of the cylinder walls?

Are the pistons in good shape? Are you using new rings?

[NMKawierider]

I'm getting that this part of the cylinder is 3mm shorter then the OE. If what he has is listed as the direct replacement, then it should be OK.