As a former carrier, I have had the following experience with several different LLV’s:
1. LLV starts idling very rough and eventually starts stalling frequently.
2. I write up the LLV and a vehicle maintenance person comes out and “fixes” it.
3. LLV now has a VERY heavy smell of unburnt gas when in operation (but it idles smoothly and does not stall).
Conclusion: the “fix” for the idling/stalling problem is to turn up the fuel in the air/fuel mix. This will let the LLV run without stalling, but may lead to excess fuel in the engine. Perhaps this leads to some of them catching on fire?
Question: why “fix” the LLV’s in this manner? Is it simply a matter of the parts needed not being manufactured any more? Or is the proper fix too expensive and time consuming?
Whatever the case, I’m glad I’m out of that situation.
My route’s LLV burned years ago on my N/S day. Prior to that there was a lot of backfiring and I am not sure what they did to service it, but it burned fairly soon afterwards.
That’s not an LLV, but still pretty old. We got those brand new around 2000 I think
That’s an FFV.
The LLV’s have a bit of a design flaw: The fuel filter is located just above the rear of the exhaust manifold. So if it starts leaking fuel, it drips on a hot manifold & poof. From your post is sounds like you had a clogged fuel filter. It may have been replaced and started leaking at that point. The LLV’s are fuel injected, so there is no way to change the air/fuel ratio. That is controlled by the computer. But as someone else correctly posted, this crispy critter is a FFL.
You sound like you know more about it than I do. All I do know is that I had not one, not two but three separate LLVs go through the rough idle/stall issue (when the engine was cold) and not one of them was fixed so that the idle was smooth. They did stop stalling, but the idle was slightly fast/rough and the fuel smell in the cab was definitely noticeable. After you get out on the street it wouldn’t be a problem for most carriers (engine warms up), but if you were on a Park & Loop route the engine never properly warms up and you stall quite a bit.
And I wasn’t the only carrier at the stations I worked at that noticed these problems…
When I see cars that look like this I always assumed that someone purchased a car that sat in a flooded area and fixed up but the wiring was always bad.