Cam belt snapped, now wont fire up

lewis.geere · 25-01-2010, 09:31 PM

Hi, i just replaced my cam belt as it snapped i have correctly fitted it but it wont fire up just turns. I no the valves will have gone but shouldnt it at least fire up?? spark and fuel are there?

Cheers

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rst in breaking · 25-01-2010, 09:34 PM

what car? if valves are bent you maybe losing compression

forevaford · 25-01-2010, 09:34 PM

lol

thebigyin · 25-01-2010, 09:37 PM

if valves are gone then NO it wont fire up.

thebigyin · 25-01-2010, 09:39 PM

oh and step away from the vehicle as you have no business being anywhere under a bonnet with youre lack of knowledge

vroooom ptssssh · 25-01-2010, 09:40 PM

Were all assuming he timed it up properly.....

siscossie · 25-01-2010, 09:44 PM

Mine snapped 16 valves and a £2000 rebuild later good as new

lewis.geere · 25-01-2010, 09:45 PM

Quote:

Originally Posted by forevaford

lol

m8 i aint a mechanic!!! fuel & spark = bang?!????

Yer its the FRST engine, i guess i will do compression test to check. I can get hold of a new head i may just replace the valves then hope 4 best

clarke5700 · 25-01-2010, 09:45 PM

lol if you belt snaped and has bent your valves the pistons will be coming up in your cilinders on there compression stroke but wont be compressing any think as it will be leaking out through the belt valves.......... thats if a valve head isent stuck in your piston

siscossie · 25-01-2010, 09:47 PM

Get it apart and checked over, it will only bight you in the arse if you dont do it properly now

Rhys · 25-01-2010, 09:49 PM

If the belt has snaped i would imagine you have done more damage! And merley replacing the belt wont fix it

Time to get that wallet back out chap!

lewis.geere · 25-01-2010, 09:50 PM

[quote=vroooom ptssssh;4678068]Were all assuming he timed it up properly.....

[/quote

Yes haynes

G420 DEL · 25-01-2010, 09:50 PM

snapped belt = bent valves and piston crowns at the least grazed.

deffo need to strip the engine.

martysmartie · 25-01-2010, 09:56 PM

As said assuming it's timed up correctly, it would have no doubt damaged valves when it snapped. You would know if was incorrectly timed would have thought by the noise when turning over. If valves are damaged engine will have no compression and so will not start.

Martin

J1mbo · 25-01-2010, 09:59 PM

if you are going to replace valves then make sure you check the valve guides arnt cracked round the bottom

also make sure the pistons arnt marked too bad

we had a yb come in with a snapped cambelt and it done the head pistons everything

so get it to bits fella unfortunately

get stuck there is plenty of us who will help amongst the piss takers lol

jim

25-01-2010, 09:34 PM	#2
rst in breaking PassionFord Post Whore!! Garage is empty, add now Trader Score: (2) Join Date: Oct 2005 Location: chingford, london Posts: 7,822 Rep Power: 14	what car? if valves are bent you maybe losing compression __________________ BREAKING MY ZETEC TURBO ESCORT!!! MK1 Escort wanted!!!

25-01-2010, 09:40 PM	#6
vroooom ptssssh It Wasnt Me! 2009 BMW E92 325i Coupé Highline My Garage Trader Score: (0) Join Date: May 2003 Location: Scottyland Posts: 22,231 Rep Power: 31	Were all assuming he timed it up properly..... __________________ Passionford's realist, not to be mistaken for Pessamist! My S1Resto

25-01-2010, 09:44 PM	#7
siscossie 3-door moonstone 1976 Ford Escort My Garage Trader Score: (3) Join Date: Dec 2004 Location: leeds Posts: 598 Rep Power: 8	snap Mine snapped 16 valves and a £2000 rebuild later good as new __________________ The project begins (moonstone 3-door)

25-01-2010, 09:45 PM	#9
clarke5700 YES I KNOW I CANT SPELL Garage is empty, add now Trader Score: (0) Join Date: Mar 2008 Location: chingford e4 Posts: 4,878 Rep Power: 8	lol if you belt snaped and has bent your valves the pistons will be coming up in your cilinders on there compression stroke but wont be compressing any think as it will be leaking out through the belt valves.......... thats if a valve head isent stuck in your piston __________________ " im special,, excuse my spellings"

25-01-2010, 09:47 PM	#10
siscossie 3-door moonstone 1976 Ford Escort My Garage Trader Score: (3) Join Date: Dec 2004 Location: leeds Posts: 598 Rep Power: 8	snap Get it apart and checked over, it will only bight you in the arse if you dont do it properly now __________________ The project begins (moonstone 3-door)

25-01-2010, 09:34 PM	#3
forevaford PassionFord Regular Garage is empty, add now Trader Score: (2) Join Date: Mar 2008 Location: brierley hill Posts: 429 Rep Power: 4	lol

25-01-2010, 09:37 PM	#4
thebigyin BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: May 2003 Location: glasgow Posts: 2,935 Rep Power: 0	if valves are gone then NO it wont fire up.

25-01-2010, 09:39 PM	#5
thebigyin BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: May 2003 Location: glasgow Posts: 2,935 Rep Power: 0	oh and step away from the vehicle as you have no business being anywhere under a bonnet with youre lack of knowledge

25-01-2010, 09:49 PM	#11
Rhys 15K+ Super Poster!! Garage is empty, add now Trader Score: (0) Join Date: May 2003 Location: South Wales, GB Posts: 18,686 Rep Power: 27	If the belt has snaped i would imagine you have done more damage! And merley replacing the belt wont fix it Time to get that wallet back out chap! __________________ 330cd convertible on the way.

25-01-2010, 09:50 PM	#12
lewis.geere Virgin 1988 Ford Escort Trader Score: (0) Join Date: Jan 2010 Location: Great Yarmouth Posts: 8 Rep Power: 0	[quote=vroooom ptssssh;4678068]Were all assuming he timed it up properly.....[/quote Yes haynes

25-01-2010, 09:50 PM	#13
G420 DEL I've found that life I needed.. It's HERE!! Garage is empty, add now Trader Score: (0) Join Date: Apr 2004 Location: Manchester Posts: 1,451 Rep Power: 9	snapped belt = bent valves and piston crowns at the least grazed. deffo need to strip the engine. __________________ wanted fez EFi Flywheel/cps sensor

25-01-2010, 09:56 PM	#14
martysmartie PassionFord Post Whore!! Garage is empty, add now Trader Score: (1) Join Date: Dec 2007 Posts: 4,916 Rep Power: 10	As said assuming it's timed up correctly, it would have no doubt damaged valves when it snapped. You would know if was incorrectly timed would have thought by the noise when turning over. If valves are damaged engine will have no compression and so will not start. Martin

25-01-2010, 09:59 PM	#15
J1mbo B1mbo Garage is empty, add now Trader Score: (1) Join Date: Sep 2007 Location: peterborough Posts: 14,673 Rep Power: 19	if you are going to replace valves then make sure you check the valve guides arnt cracked round the bottom also make sure the pistons arnt marked too bad we had a yb come in with a snapped cambelt and it done the head pistons everything so get it to bits fella unfortunately get stuck there is plenty of us who will help amongst the piss takers lol jim __________________ mt-motorsport.com

25-01-2010, 09:59 PM
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