Timing

Post by **albertramsbottom** » 15 Jun 2009, 15:05

Hi

How does the timing go out then? I have had a couple of back fires recently and took the van out the other day and it felt like the handbrake was on. I have recenly had a carb refrub from Gasure so I wouldnt have thought it would be the carbs. I had the timing done about 6 months ago

Cheers

Post by **R0B** » 15 Jun 2009, 15:42

should that read.i wouldn't have thought it would be the carbs?

recenly had a carb refrub from Gasure so I would have thought it would be the carbs

Post by **albertramsbottom** » 15 Jun 2009, 15:46

Err yes

Post by **toomanytoys** » 15 Jun 2009, 18:08

Er, generally it doesnt... but back firing doesnt mean timing is wrong (but it could be...) air leaks.... on manifolds, pipes come off, crud blocking jets... I would go round and check nothing loose/missing/split first... did it start doing it as soon as the carbs were refitted?? or a while later....

Post by **albertramsbottom** » 15 Jun 2009, 19:27

recently actually, soon after I lost my tail pipe which probably doesnt help

Cheers

Post by **toomanytoys** » 15 Jun 2009, 19:31

Whats the rest of the exhaust like??? could be air leaks on that, it causes "popping" in overrun... Tail pipe makes quite a difference to engine too... all about resonant lengths...

Post by **albertramsbottom** » 15 Jun 2009, 19:45

toomanytoys wrote:Whats the rest of the exhaust like??? could be air leaks on that, it causes "popping" in overrun... Tail pipe makes quite a difference to engine too... all about resonant lengths...

Yes I have got popping on overrun but i cant find any holes in the exhuasts apart from the fact that the cover for one of the heat exchangers has completly rotten away and I am left with the radiator type heat sinks showing. But as I understand it the exhuast runs through the heat exchangers so this isnt a blow.

Cheers

Post by **toomanytoys** » 15 Jun 2009, 20:23

Doesnt need much of a leak.. but it could be the inlet side too...

Post by **albertramsbottom** » 15 Jun 2009, 20:51

toomanytoys wrote:Doesnt need much of a leak.. but it could be the inlet side too...

Where is that? Under the carbs?

Cheers for your help

Paul

Post by **toomanytoys** » 15 Jun 2009, 20:56

Yep, check the bolts/nuts are nipped (manifolds to heads and carbs to manifolds) up and there are no pipes split/adrift etc...

Post by **jason k** » 15 Jun 2009, 21:51

try spraying wd40 around the bases when the motors running, it will be obvious if its sucking any in

Post by **dugcati** » 15 Jun 2009, 22:30

jason k wrote:try spraying wd40 around the bases when the motors running, it will be obvious if its sucking any in

Just be aware that you don't spray too much and not on a red hot engine either - it burns quite nicely

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