What causes Flatspots?
Tyre flat spots caused by sitting usually happen when the vehicle has been parked up and then left. The tyres cool down from the drive and can harden into a flattened shape. After long-term car storage, tyre flat spots are not unusual, but can be noticeable when you drive away.
What is a flat spot on a baby’s head?
Flat head syndrome usually happens when a baby sleeps with the head turned to the same side during first months of life. This causes a flat spot, either on one side or the back of the head. Flat head syndrome is also called positional plagiocephaly (pu-ZI-shu-nul play-jee-oh-SEF-uh-lee).
How does pilot injection work in a diesel engine?
Modern diesels (HDi included) use pilot injection at low revs to start the main combustion off gently and thus reduce the old familiar diesel knock.
Can a diesel engine rattle when under load?
I know diesels can rattle when under load but what generally causes this. I have worked on cars a lot in th past but all petrol, diesels only recently. When cold I hear a rattle in the cabin, not terrible but there, when accelerating in the gears, reduces as the engine heats up but still audible. Also reduced in higher gears and almost gone in 5th.
Why does my car stop at 3200 rpm?
If the noise is quite distinct, and then suddenly stops when you get to a particular rpm (might be 3,200) it is a worn injector – instead of helping to reduce pre-ignition, they dribble a bit, and cause more pre-ingnition! The ECU cuts this at 3200 rpm, and the noise switches off The car is a 2001 Xantia with 115k miles.
Why does my car not accelerate uphill?
We also showed you the main reason why car won’t accelerate past 40 and also why car wont accelerate past 20 and finally, we discussed the reason your car wont accelerate uphill. So if your car won’t accelerate but RPMs go up automatic then you know why that is so.
What causes car RPMs to go up but not down?
There might be a leaking vacuum hose in the car, hoses deliver air and fuel to the combustion chamber. If it is leaking, the air will mix with the gas causing the RPMs to go higher than it should be. Another thing to look out for is a clogged air filter if the air is having difficulties entering the combustion chamber.
We also showed you the main reason why car won’t accelerate past 40 and also why car wont accelerate past 20 and finally, we discussed the reason your car wont accelerate uphill. So if your car won’t accelerate but RPMs go up automatic then you know why that is so.
Why does my diesel engine hiccup in low gears?
It is not usually a serious issue but is more of a nuisance. Drivers with a DSG tranny in the low gears may have it also, but in that case, it is simply due to the split-second timing between gears. Diesel engines are different than gas engines.
What happens when you let off the throttle?
The rpm gauge is on the rise the mph guage is on the fall and the truck is coasting until you let off the throttle and the rpm’s come down. Then the tranny shifts into 3rd and you are on the move again.