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Sept 4, 2013 17:26:57 GMT
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Just picked up a Fiesta 1.25 Zetec s 16v Ghia Manual. 92000k FSH
Car drives spot on pulls really well in all gears etc. With no loss of power or driving experiance at 2600 - 3000 rpm there is a knocking noise coming form the engine. Not sure what it is as it does not effect the driving at all. it is only apparent upon acceleration and steady, when decelerating the knock disappears.
I thought (hopefully) it may be one of the Hydraulic lifters (tappets) I have added a cleaner (Wynns) but it is still knocking. The knocking is not random but is rhythmic....possible big end bearing?
Any ideas and a fix would be appreciated
Cheers
BM
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Toyota HiAce Super Custom Ltd (My thing) Isuzu Trooper (her thing) Audi a4 1999 (boys thing) Toyota Yaris Caravan - (festi thing)
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hamps
Posted a lot
www.medwayrscentre.co.uk
Posts: 2,077
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Sept 4, 2013 17:55:42 GMT
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very common on the 1.25 lumps, they are a bit of a throw away engine to be honest! they need servicing regular and on time, if not they fail! i have fitted tons of these things over the years, easier and cheaper to buy another engine unfortunately mate
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Sept 4, 2013 18:05:21 GMT
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thanks for the reply...reckon its the big ends?
IF so will pop on Ebay methinks shame really though
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Toyota HiAce Super Custom Ltd (My thing) Isuzu Trooper (her thing) Audi a4 1999 (boys thing) Toyota Yaris Caravan - (festi thing)
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Sept 4, 2013 19:07:07 GMT
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Try an oil pressure gauge (fits where the oil pressure warning light switch is) as worn big ends will give you low oil pressure. Worn pistons or bores can give you piston "slap" which sounds similar. Big ends are more of a "rapping" sound when the engine is under load. It will usually continue when pulling hard up a long hill at steady mid revs in low gears. Pinking ( a mettalic rattling sound)can occur under similar conditions if the engine is advance timed (distributor out of adjustment on older engines)or there is excess carbon build up. Can you do a Youtube video of it? You need an experienced ear for a better diagnosis. Big end wear can also show up as soft metal bits in the old oil.
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Life without spanners is no life!
Rover 414 SLI
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Sept 4, 2013 19:13:44 GMT
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Ok will you tube it in the morning and thanks again for your help, looking forward to a semi diagnosis
Cheers
BM
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Toyota HiAce Super Custom Ltd (My thing) Isuzu Trooper (her thing) Audi a4 1999 (boys thing) Toyota Yaris Caravan - (festi thing)
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Sept 4, 2013 20:02:41 GMT
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Big ends don't usually loose that much oil pressure, thats usually the mains in most engines in my experiance anyway. I had a 1.6D cavalier that spun a big end shell when the rest of the shell disintegrated and still managed to make it back home knocking like a bag of spanners but the oil pressure light never came on.
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You Tube link...
fingers crossed lol
Cheers
BM
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Toyota HiAce Super Custom Ltd (My thing) Isuzu Trooper (her thing) Audi a4 1999 (boys thing) Toyota Yaris Caravan - (festi thing)
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ChasR
RR Helper
motivation
Posts: 10,195
Club RR Member Number: 170
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The tappets in the 1.25 are solid from what I can remember. Even if they are gone, changing them instead of whacking in lifter treatment will help more. As I found with my Passat (the PO put in around 2 bottles to silence the terminally ill tappets).
There is a chance that they need reshimming (this can be checked with the cam cover off), but these engines are known for having the big ends going due to a lack of maintenance.
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That sounds like either big ends, a broken piston ring or piston slap. Either way, I'd at least have the head off for a look see! With the head off, you may be able to see evidence of ring failure or bore wear. Mike
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Life without spanners is no life!
Rover 414 SLI
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ChasR
RR Helper
motivation
Posts: 10,195
Club RR Member Number: 170
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An endoscope could also potentially remove the need to remove the head (with an old Porker of mine it certainly did .
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hamps
Posted a lot
www.medwayrscentre.co.uk
Posts: 2,077
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You Tube link... fingers crossed lol Cheers BM Definitely sounds like bottom end from experience, just get another engine.
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Excuse my ignorance in all things mechanical.......bottom end even though noise is coming from the top of the engine where my hand is in the video? Car has near enough a full service history and since 2005 has only covered approx. 6000 having full main dealer service at each MOT time so think it has been looked after. It was a typical old blokes car who had to give up driving. Pretty gutted about it being more than the tappets / lifters as don't want to put any more money into car
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Toyota HiAce Super Custom Ltd (My thing) Isuzu Trooper (her thing) Audi a4 1999 (boys thing) Toyota Yaris Caravan - (festi thing)
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Sept 5, 2013 10:28:41 GMT
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Ahhhh the good old trusty 1.25 zetec chocolate spec crank lol , and this was the replacement for the good old indestructible Kent engine ..... Tut tut ford
As said these motors are like a zippo lighter that's not refillable once used then throw it n bin
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Sept 5, 2013 14:54:36 GMT
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Well his one is for sale on Gumtree lol Thanks for help all BM
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Toyota HiAce Super Custom Ltd (My thing) Isuzu Trooper (her thing) Audi a4 1999 (boys thing) Toyota Yaris Caravan - (festi thing)
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ChasR
RR Helper
motivation
Posts: 10,195
Club RR Member Number: 170
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Sept 5, 2013 15:49:36 GMT
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Ahhhh the good old trusty 1.25 zetec chocolate spec crank lol , and this was the replacement for the good old indestructible Kent engine ..... Tut tut ford As said these motors are like a zippo lighter that's not refillable once used then throw it n bin True, although they do run better than the Endura/Kent engines IMO, in addition to being more fuel efficient etc. But many modern engines do not take neglect well as the old stuff does.
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Sept 5, 2013 20:00:37 GMT
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Agreed chas these motors do need regular oil changes to prolonged there life ,but seem to always throw cranks long before anything else major happens
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mikeymk
Part of things
'85 Polo Coupe S 1.6 16v
Posts: 931
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Tappets are a teeth-chattering affair whether it be rockers or hydro, big ends are more a 'bone-deep' sound.
Recordings from the tube to the laptop don't tend to go incredibly well when it comes to engines, but even with that in mind, i'm certain what you have there is a big end failure (and i've heard a few, ally and iron cases). Sound does have an odd way of travelling - the harmonics are hitting the cylinder head through the compressed air in the cylinder, plus the breather air in the head, so the head does give off sound. Add to that the water jacket and oil reserve giving insulation, and the sound is either gonna be up top or upper sump / lower crankcase.
A new set of shells has gotta be worth a try. I'm no expert on this particular engine, i did once own a '98 1.4 16v zetec Si model with effectively the same engine (surprisingly good to drive, that now-rare thing was) but i only had to service it. So word that it's a disposable item is fair enough but it's neither laborious or expensive to throw some new shells in, so as long as the rest of the engine seems intact then it's gotta be worth trying..? And i'd 'run it in' on a thin mineral oil such as 10w/40 for a few hundred miles with that (the valves won't stick at that mileage), before using a good synthetic.
With the possibility of it throwing a rod through the block, you might wanna refrain from putting your face/hand there at those revs.
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hkr91
South East
Posts: 559
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Have a look at fitting a 1.6 from the Fiestas or even a 1.7 from the Pumas...
Cheap as chips to buy these days (could even buy a running fiesta or puma and swap the bits across...)
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Sept 6, 2013 10:32:50 GMT
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too much hassle for a non mechanically minded individual but really appreciate the replys and advice.
have popped it on ebay hopefully recoup a few quid!
Cheers
BM
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Toyota HiAce Super Custom Ltd (My thing) Isuzu Trooper (her thing) Audi a4 1999 (boys thing) Toyota Yaris Caravan - (festi thing)
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Sept 6, 2013 10:36:34 GMT
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Shame big man really could you not buy a s/h good running motor and fit that ?? If honest it looks and seems more daunting of a job than it really is could easily be swapped out in a day taking your time ..... Am sure there are some nice ppl local that may offer some help on here too
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