An engine equipped with an L-type head configuration has recently had a tune-up. During the tuneup,
the oil was changed, the filters were replaced, the cooling fins were cleaned, and the spark plug
was replaced. The engine ran fine before the tune-up, but now it won’t start. When you begin to disassemble
the engine, you find that the spark plug’s ground electrode is pushed up against the center
electrode and that there are dents and gouges on the head of the piston. Which of the following is the
most likely cause of the engine problem?
A. The crankcase was filled with too much oil.
B. The spark plug reach was too long.
C. An air cooling fin was broken.
D. The piston head was gouged by a screwdriver when the air filter was changed.
2007-02-20 05:15:39 · 11 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
i would say do your own homework for whatever engine class you are taking
2007-02-20 06:26:39 · answer #1 · answered by bela k 4 · 0⤊ 9⤋
Is it in all the cylinders or just one or two ? Have you already disassembled the engine or the cylinder head? The culprit could be the spark which may have a long reach and the piston may have hit it thus breaking it and damaging it in process ,or it could also be that when the spark plugs were removed for replacement,some foreign material may have slipped through the spark plug hole and thus causing the damage once the engine was cranked,and if that is the case then no wonder its not starting because the valves may too have been damaged thus there is no compression in the cylinders to fire up!
2007-02-20 05:27:28 · answer #2 · answered by Knight 1 · 0⤊ 0⤋
I think your teacher is looking for answer ( B )
But you'll have to explain to him/her yourself that it was one of the valves that closed the spark plug gap, not the piston.
That must be some special kind of flat head to have the spark plug above the piston.
The dents in the piston were from some jerk putting some small screws into your project while you were not looking.
2007-02-20 05:28:21 · answer #3 · answered by Anonymous · 1⤊ 0⤋
B. is the correct answer
A. would have maybe blown a gasket or in worst case scenerio hydrolocked the engine.
C. would be an external problem,
D. you couldnt get a screwdriver down that far when changing the air filter
2007-02-20 05:26:52 · answer #4 · answered by zebj25 6 · 1⤊ 0⤋
none of the above.
change the spark plugs for the right ones,and cross You finger, that the fricking piece of Junk ,that You call "mechanic" has not spoil Your engine
nope,the spark plug never reached the piston.
but, they are "too hot" ,and brake apart them self.
2007-02-20 05:50:42 · answer #5 · answered by Anonymous · 0⤊ 1⤋
B. Obvious.
I answered both your questions. What do I win?
2007-02-20 05:48:50 · answer #6 · answered by ? 4 · 0⤊ 0⤋
I will go with "B" on this, because "A" always gives me gas. BUURRRR, excuse me.
2007-02-20 05:33:50 · answer #7 · answered by Robert D 2 · 0⤊ 0⤋
b is correct
2007-02-20 05:20:11 · answer #8 · answered by james l 1 · 0⤊ 0⤋
B.... for butt head
2007-02-20 05:23:48 · answer #9 · answered by Robert P 6 · 0⤊ 1⤋
B
2007-02-20 05:27:31 · answer #10 · answered by Harly Q 4 · 0⤊ 0⤋