Car turns over but sounds like the timing belt is broke. Timing good ???? HELP PLZ.....

[sleepyboy]

Well I hate to say it but you motor sounds like it is toast. Now the problem is why did it loose compression. You can check fuel pressure with a scanning tool. I had a Snap-on scan tool the big exspensive one I borrow from a friend. That was the only way I could check my pressure along with every other sensor. I wish you the best of luck and keep us updated on whats happening.

[Feral]

As for my Gauges they do that every so often thats the cars way of calibrating the cluster...

Somethings definitely awry with that top end it sounds like the valves have been kissed by the Pistons and bent to a point that they close to a point but not fully

he mentioned that the valves are not fully closing yet theres a gap between the lifter and the lobe

all I use is my laptop and a cheap $25 OBDII interface its called an ELM-327

[Missourileo]

Have you thought about replacing your camshaft position sensor?

[B3NN3TT]

HAd the car been pinging excessively? Have you burned a valve?

[Street]

had a similar situation with a friend of mine's 4 cyl ranger. sounded like the timing was off, loss of power and mileage, and low compression. ended up being the piston rings had failed and broke apart, tearing a few gashes in the piston tops. one had a hole clean through the center but it still ran. a few years ago i had a zx2 that lost power one day and the cel popped up for exhaust timing to excessive, the idler pulley for the timing belt had came apart, the belt was still tight (the half that was still together) but it was way off and the vct tried to correct but couldn't keep with parameters of computers. when i changed the timing belt and set all i pulled out of that one pulley was the bearing, the plastic pulley had disappeared.

[svtfocusmansvt]

Originally Posted by Missourileo

Have you thought about replacing your camshaft position sensor?

I'd be down to replace it if it were bad. I have no codes, and the cylinder leakdown should have shown zero if all of the mechanicals of the engine were good (or at least I would think.)

Originally Posted by B3NN3TT

HAd the car been pinging excessively? Have you burned a valve?

No pinging what so ever! I have had no abnormalities up to this point.



I did a dry compression test last night. I am going to double check with doing a wet test to see if anything changes to rule out an issue of the cylinder walls being washed down and maybe the rings are not sealing giving a low compression reading? At this point it seems that the valves for whatever reason have become bent, I wouldn't think the valves have been stuck when trying to start and maybe have smacked the pistons?

[Captain Moonpie]

I am guessing its the cam position sensor. I have heard of a few going out on our little foci.

[djblackout]

when you do the comp test your holding the gas pedal down right?

[svtfocusmansvt]

Originally Posted by Captain Moonpie

I am guessing its the cam position sensor. I have heard of a few going out on our little foci.

Would a bad cam position sensor cause no codes, or low compression also?

Originally Posted by djblackout

when you do the comp test your holding the gas pedal down right?

I have activated the intertia switch to shut the fuel off for the comp test. I was not sure if the low compression was from maybe the cylinder walls being washed down from stuck injectors or from something else. When doing the wet test the numbers only changed around 5 psi which shows that is not the case. I have .005 gap between the cam and the lifter when the lobe is facing straight up. I started to pull the header to check for valve damage on the exhaust side and was not able to finish the last 3 bolts because I did not have a deep well 13mm socket to pull the 3 nuts off of the studs, I will finish tomorrow night. I just am still not sure why I would have valve damage when the car has been great up to this point. Then no compression after sitting for two days? Which I had moved the car the day before in the driveway and was great also.

[aspire5920]

i know this is a dead thread, but im having the same problem with my zetec, timing belt, tensioner, etc is all good, nice and tight, no teeth missing. Mom ran it out of fuel, and when she put fuel in it, it would turn over like it had no compression. Figured the timing belt finally went, and tore it apart. Now that I have it torn down, the belt is in great shape, and the tensioner seems to be holding great tension. Fuel pump turns on, tried cycling the key many, many times to no avail. What ended up fixing yours?