engine alarm

GAS engine, transmission and generator repair and maintenance discussion forum.
User avatar
bud37
Admiral
Admiral
Posts: 5182
Joined: April 23rd, 2015, 10:22 pm
Has thanked: 604 times
Been thanked: 1312 times

Re: engine alarm

Post by bud37 »

km1125 wrote:Qr Bbpost That bolded part is not really true.


When you apply the caveat I wrote about poorly tuned it is,........I can't see in the this case how there would be over 25000 PPM CO to set the sensor off at the LEL in the engine compartment without some seriously obvious disaster, which according to him he does not have.
FWIW.....The above is just my opinion.
User avatar
km1125
Admiral
Admiral
Posts: 3657
Joined: February 28th, 2017, 6:04 pm
Has thanked: 81 times
Been thanked: 1114 times

Re: engine alarm

Post by km1125 »

bud37 wrote:Qr Bbpost
km1125 wrote:Qr Bbpost That bolded part is not really true.


When you apply the caveat I wrote about poorly tuned it is,........I can't see in the this case how there would be over 25000 PPM CO to set the sensor off at the LEL in the engine compartment without some seriously obvious disaster, which according to him he does not have.


Well, I can tell you my personal experience is that on two different occasions I've had exhaust leaks over the years on an engine that would certainly not be considered "poorly tuned" and it did set off the combustible gas sensor from the exhaust gases. There is always a small bit of unburnt gasoline in the exhaust (unless you have a catalyst to burn that off) and there is also a substantial amount of Carbon Monoxide. Between the two, it's very easy to get over 10% of the LEL.
User avatar
bud37
Admiral
Admiral
Posts: 5182
Joined: April 23rd, 2015, 10:22 pm
Has thanked: 604 times
Been thanked: 1312 times

Re: engine alarm

Post by bud37 »

That is pretty much what I said.....not sure why we are arguing about the same thing...it is about 20% lel, but with each makers unit the spec may just be a bit different, but there may be a reg here...... As with any gas testing there are circumstances specific to each case that alter the way the case is handled.
Let's get back to the issue here when he finds out for sure what alarm he has got going.
FWIW.....The above is just my opinion.
Post Reply