FFTS
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| posted on 13/2/10 at 02:16 PM |
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Pinto Help.. no compression on 2 cylinders.
My mates 2.0 pinto was driving fine on the motorway then started to miss a bit and lose power gradually until the point the juddering was worse and
wouldnt go above 20mph and worse with more throttle. Then stopped altogether. Webber Dgav carb spits fuel up and out the primary choke now and then if
turning the engine over. Took the plugs and and found 2 wet plugs with compression and 2 dry with no compression. Am I right in guessing the timing
belt may have slipped?
Chris.
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mookaloid
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| posted on 13/2/10 at 02:17 PM |
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head gasket failure between 2 cylinders?
[Edited on 13/2/10 by mookaloid]
"That thing you're thinking - it wont be that."
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thunderace
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| posted on 13/2/10 at 02:22 PM |
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nip up the head and see is its ok
or sniff test it.
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jacko
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| posted on 13/2/10 at 02:31 PM |
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Cam rocker ? come loose or snapped
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StrikerChris
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| posted on 13/2/10 at 02:36 PM |
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quote:
Originally posted by mookaloid
head gasket failure between 2 cylinders?
[Edited on 13/2/10 by mookaloid]
My guess too if they're adjacent cylinders?
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FFTS
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| posted on 13/2/10 at 02:39 PM |
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quote:
Originally posted by thunderace
nip up the head and see is its ok
or sniff test it.
Sniff test???
CORRECTION!!
After turning the engine over with choke on then taking the plugs out, plugs 1 & 2 were wet and no compression, plugs 3 & 4 were bone dry and
full compression.
Chris.
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mookaloid
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| posted on 13/2/10 at 02:42 PM |
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ok head gasket failure between 1 & 2 pots..
"That thing you're thinking - it wont be that."
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FFTS
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| posted on 13/2/10 at 03:21 PM |
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quote:
Originally posted by mookaloid
ok head gasket failure between 1 & 2 pots..
That sounds a very definate answer! Is there anything else I should check or other test before commiting to removing the head?
Any others agree or differ?
Thanks
chris
Chris.
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mookaloid
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| posted on 13/2/10 at 03:29 PM |
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Well it's hard to be 100% definite, but that's exactly what happened to mine with the symptoms you describe.
I guess you could take the plugs out and pour some light oil down no 1 plug hole. then turn the engine by hand a few times to see if any of the oil
gets into no 2 clyinder - check with tissue paper down the plug hole.
You could check all the cam timing before taking the head off and inspect the cam shaft for damage too.
if the above are ok I'd put my 50p on it being the head gasket
good luck!
Cheers
Mark
"That thing you're thinking - it wont be that."
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coozer
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| posted on 13/2/10 at 03:45 PM |
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Zetec transplant??
1972 V8 Jago
1980 Z750
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FFTS
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| posted on 13/2/10 at 03:57 PM |
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quote:
Originally posted by coozer
Zetec transplant??
Gasket set £13!!
Zetec transplant £????.. More 
Chris.
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dlatch
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| posted on 13/2/10 at 05:16 PM |
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has the head been converted to unleaded with new valve inserts?
i had a pinto head crack under one causing loss of compression
ps another vote for zetec conversion 
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Daddylonglegs
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| posted on 13/2/10 at 06:42 PM |
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I'm with the headgasket gang. Sounds favourite to me.
It looks like the Midget is winning at the moment......
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Dusty
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| posted on 13/2/10 at 08:15 PM |
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You could do a sort of modified leakdown test. Remove plugs. Blow air into cylinder 1 with its valves closed. Listen/feel for where it's
escaping. Might hear it escaping into crankcase (holed piston, broken rings) manifolds (valve/seat damage) number 2 cylinder (head gasket failure). Or
just bite the bullet and change the head gasket. After all the heads comming of anyhow!
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