3rd Cylinder misfire - expensive repair advice
Discussion
bearman68 said:
OP is casrefully ignoring everything said to him.
1) Garage says you can't damage it by driving it - internet says you can.
2) Garage says head can't be removed without taking the engine out - Internet says you can.
3) Garage says they've tested sparks - internet says worth changing anyway.
<shrug> Not my car, so why should I care?, but if you're asking for advice seems sensible to at least consider it.
Appreciate all the responses and pardon me for my lack of knowledge on the matter. Being is shock lead me to not properly listening to what was being said! Anyway i called again and Spoke with Tom at tgm today and he said that the issue could be a damaged valve and there is a compression leak within the valve but can't tell for sure unless the engine is taken apart. Spoke with Grinspeed too who confirmed the same and said it's easier to determine with the engine out. Grinspeed also mentioned that worst case scenario would be a damaged piston which would mean a new engine! ...ouch1) Garage says you can't damage it by driving it - internet says you can.
2) Garage says head can't be removed without taking the engine out - Internet says you can.
3) Garage says they've tested sparks - internet says worth changing anyway.
<shrug> Not my car, so why should I care?, but if you're asking for advice seems sensible to at least consider it.
Commander2874 said:
Would there be any other symptoms if it was a damaged piston? Car has done 35k miles and drives fine but slight loss on power and slight shake in the cabin when idle now and again.
A leaky or sticking valve or damaged piston or bore could be identified using a leakdown test and potentially confirmed using a borescope.GreenV8S said:
A leaky or sticking valve or damaged piston or bore could be identified using a leakdown test and potentially confirmed using a borescope.
Thank you mate. .interesting. I'll ask if they could do that as i dont want to be told it's a new engone job after paying £750 labour GreenV8S said:
A leaky or sticking valve or damaged piston or bore could be identified using a leakdown test and potentially confirmed using a borescope.
Valve leakage is often determined by putting a small quantity of oil down the spark plug hole and checking again. No change = valve. Change = ring issue.Sounds like the head has to come off as a minimum. Time to bite the bullet I think.
Commander2874 said:
Appreciate all the responses and pardon me for my lack of knowledge on the matter. Being is shock lead me to not properly listening to what was being said! Anyway i called again and Spoke with Tom at tgm today and he said that the issue could be a damaged valve and there is a compression leak within the valve but can't tell for sure unless the engine is taken apart. Spoke with Grinspeed too who confirmed the same and said it's easier to determine with the engine out. Grinspeed also mentioned that worst case scenario would be a damaged piston which would mean a new engine! ...ouch
This is essentially all nonsense so either you still do not understand what you were told or it was incorrect. It is certainly possible to diagnose what is causing the low compression without taking the engine apart. A leakdown test and/or a borescope examination for starters. A damaged piston does not = a new engine. Why the hell would it? Does every piece of equipment which suffers a single component failure need to be totally replaced? Whether you know anything about engines in particular or not you are surely familiar with the concept of mending things.If the problem actually is a damaged valve and we have no particular reason to believe that yet then it could certainly do more damage if you continue to drive it. If the head of the valve comes off completely then you may indeed be looking at a new engine. One thing's for sure. It ain't going to get better by itself.
Thanks for your help guys and yes i still don't fully understand it myself! I assume the compression test was done showing a leak an and compression being down to half in the 3rd cylinder but full diagnosis would require a further investigation hence checking the engine.
I will further update when i get the job done or should i get another opinion from my local Honda garage? Saying that, it will end up costing me a lot more!
So advise taken and i will not drive my car until this problem is fixed
I will further update when i get the job done or should i get another opinion from my local Honda garage? Saying that, it will end up costing me a lot more!
So advise taken and i will not drive my car until this problem is fixed
stevieturbo said:
Far too many people think a leakdown test is a be all end all...no it isnt. A proper compression test can yield a lot of info.
However, competent garages in general are few and what is actually wrong here....who knows.
Yes your right However, competent garages in general are few and what is actually wrong here....who knows.
but it will pass more information back than that 1/2 expected pressure figure from a conventional compression test 
every form of diagnosis has its pros and cons after all 
Sounds like a bit of info has been lost in translation as the Op says he's not 100% of the car lingo.
Head can come off without removal and piston can also be changed with sump off and block still in the car. Mileage is low and the K is a tough engine to throw a component so early. Not saying it doesn't happen, but plenty of big HP versions around, so as standard can take abuse.
I wouldn't drive it anymore , in case of a piston issue and damaging bores, then you are stuffed. A borescope would give a better vision on whats happening before you start stripping out.
I would see a Honda specialist (not main dealer !) close to you to sort this out , just because of odd answers from the places who have looked at the car . Worse case is a replacement used engine and the K series is a lot cheaper and easier to source than an F20 !!
Head can come off without removal and piston can also be changed with sump off and block still in the car. Mileage is low and the K is a tough engine to throw a component so early. Not saying it doesn't happen, but plenty of big HP versions around, so as standard can take abuse.
I wouldn't drive it anymore , in case of a piston issue and damaging bores, then you are stuffed. A borescope would give a better vision on whats happening before you start stripping out.
I would see a Honda specialist (not main dealer !) close to you to sort this out , just because of odd answers from the places who have looked at the car . Worse case is a replacement used engine and the K series is a lot cheaper and easier to source than an F20 !!
Justin S said:
Sounds like a bit of info has been lost in translation as the Op says he's not 100% of the car lingo.
Head can come off without removal and piston can also be changed with sump off and block still in the car. Mileage is low and the K is a tough engine to throw a component so early. Not saying it doesn't happen, but plenty of big HP versions around, so as standard can take abuse.
I wouldn't drive it anymore , in case of a piston issue and damaging bores, then you are stuffed. A borescope would give a better vision on whats happening before you start stripping out.
I would see a Honda specialist (not main dealer !) close to you to sort this out , just because of odd answers from the places who have looked at the car . Worse case is a replacement used engine and the K series is a lot cheaper and easier to source than an F20 !!
Thank you mate. Been enquiring whether to just part exchange and get another car as this has made me lose confidence in my fn2. Downside is I be spending a few k more getting another car so either way in out of pocket! Head can come off without removal and piston can also be changed with sump off and block still in the car. Mileage is low and the K is a tough engine to throw a component so early. Not saying it doesn't happen, but plenty of big HP versions around, so as standard can take abuse.
I wouldn't drive it anymore , in case of a piston issue and damaging bores, then you are stuffed. A borescope would give a better vision on whats happening before you start stripping out.
I would see a Honda specialist (not main dealer !) close to you to sort this out , just because of odd answers from the places who have looked at the car . Worse case is a replacement used engine and the K series is a lot cheaper and easier to source than an F20 !!
Update time!
The problem was a bent valve which has now been replaced and head skimmed at the machine shop. Car was given new oil and valve clearances done again. Driving like new and cabin vibrations are gone. I feel i inherited this problem when i bought the car which gradually got worse as time wore on.
Glad it is all sorted!
The problem was a bent valve which has now been replaced and head skimmed at the machine shop. Car was given new oil and valve clearances done again. Driving like new and cabin vibrations are gone. I feel i inherited this problem when i bought the car which gradually got worse as time wore on.
Glad it is all sorted!
All things considered a good result, and sounds like a decent and honest garage too.
Certainly a far cry from the utter morons who said it needed a complete new engine or whatever.
Maybe a little pricey for one valve ? Or did they replace them all ?
Although such a job is quite labour intensive
Certainly a far cry from the utter morons who said it needed a complete new engine or whatever.
Maybe a little pricey for one valve ? Or did they replace them all ?
Although such a job is quite labour intensive
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