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Low compression in number 2 cylinder

Hyundai iload / imax

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David Harrelson

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Posted on Feb 26, 2015

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Is the 2018 Hyundai iLoad van's diesel engine prone to injector seal leakage that may in some cases cause turbo failures?

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Why is there a cylinder 2 misfire?

Check these three things in the misfiring cylinder: spark, gas, and compression. One of them is wrong or missing. For spark check the spark plug and wire. Make sure you have spark on the plug wire, a strong blue spark. For gas, the fuel/air mixture may be wrong. Does the fuel injector pulse, putting gas into the cylinder? Possibly you may have a leaking injector or a clogged injector.

If gas and spark seem okay, you need to check compression in the cylinder. Low compression will cause a misfire. If compression is 20 or 25% lower than adjacent cylinders, that could be causing a misfire. For example, say numbers 1 and 3 cylinders had about 150 psi compression. 80% of 150 = 120, so if cylinder 2 is 120psi or less, that could be setting the misfire code. Low compression can be caused by valves not seating well, or bad piston rings, bad head gasket- something in the combustion area of the cylinder is losing compression.

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scored bore
valve adjustment

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Compression cylinder low #2 and #3 cylinders.

there are only four possibilities left:
1: valves are not fully seating - adjust rocker arm / cam
2: piston rings are bad - replace rings
3: holes in pistons - replace
4: cylinders out of round - most complicated repair, bore / machine cylinders and replace piston rings with oversized rings.

of course you could just have 'gunk' on the valves preventing full closure........

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Repeated code P0301 and P0302

you don`t if say if you know but these codes mean misfire on cylinder 1 and cylinder 2.you also don`t say if you tried anything to fix.check out plugs they may need changing,it could be bad ignition wires or dirty injectors,or even dirty valves(not closing completly)causing misfire.you could have low compression on these two cylinders also.

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Number#3 injector will not fire at low speed or low idle, new wires and plugs as well as a new injector has been installed and still it will not fire unless you are at high speed?

ck compression on cylinder see what compression it has could have bad valve

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My 93 excel seems to be leaking pressure between cld 1&2 there is almost no pressure in these 2 wheras 3&4 has 175 psi in each which seems high. no external leaks, no water loss. only had car for...

The 175psi is not high for cylinder compression (I believe I interpreted it correctly). Two adjacent cylinders with low compression almost always means the head gasket has blown the fire ring between the cylinders. Pull the head, have it checked and or milled. New head gasket set, timing belt, oil change and get her going.

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Low compression in number 2 cylinder

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David Harrelson

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150 IMAX HAS 30 PSI COMPRESSION ON 1 CYLINDER WHAT IS THE PROBLEM

Why is there a cylinder 2 misfire?

Low compression on number 2 cylinder

Compression cylinder low #2 and #3 cylinders.

Repeated code P0301 and P0302

Number#3 injector will not fire at low speed or low idle, new wires and plugs as well as a new injector has been installed and still it will not fire unless you are at high speed?

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Low compression in number 2 cylinder

1 Answer

David Harrelson

Add Your Answer

Attachments: Added items

Related Questions:

Is the 2018 Hyundai iLoad van's diesel engine prone to injector seal leakage that may in some cases cause turbo failures?

Radio code for hyundai iloade

Is it posible to change from leve spring rear to coil springs from a iMax people mover van ?

150 IMAX HAS 30 PSI COMPRESSION ON 1 CYLINDER WHAT IS THE PROBLEM

Why is there a cylinder 2 misfire?

Low compression on number 2 cylinder

Compression cylinder low #2 and #3 cylinders.

Repeated code P0301 and P0302

Number#3 injector will not fire at low speed or low idle, new wires and plugs as well as a new injector has been installed and still it will not fire unless you are at high speed?

My 93 excel seems to be leaking pressure between cld 1&2 there is almost no pressure in these 2 wheras 3&4 has 175 psi in each which seems high. no external leaks, no water loss. only had car for...

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Is the 2018 Hyundai iLoad van's diesel engine prone to injector seal leakage that may in some cases cause turbo failures?

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How To Replace Front Sway Bar bushing on 2004 Hyundai santa fe 3.5 L? There is not space to remove the bolts. Do you have any good ideal? Thanks.

2010 Santa Fe 3.5l. how can I check the automatic transmission fluid level?

2010 V6. How can I find an automatic transmission fluid leak? Removed air filter and housing and there was a puddle of fluid on top of the transmission

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