I was woundering how would a first timer change a cam belt on a 1500cc sohc v-tec does the belt its self have to be lined up to any thang??or do the cams have to line up with the cranck cause i've relased the tentioner and i didint really mark it to well and i allso was turning on the crank trying to get the big pully off
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Re: new cam belt
You MUST time the cams within a couple teeth or you may cause the valves to hit the top of the pistons when the engine turns. If you don't have a repair manual for your car go get one now so you have the directions in front of you. In the meantime, turn your cams so all valves are closed, then turn your crankshaft until you can see the timing mark. Ultimately the belt itself lines up to nothing, but the cams must have all the valves closed when the piston is rising on the compression stroke, and keep them closed until after the spark plug fires. So the crankshaft and the cams must be timed precisely.
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storm what engine? 4xe1 or 4xf1 SOHC or DOHC (twin cam)?
its really an Isuzu Impulse in snack skins (badges)
does test fuel run engine? that is step 2.
if the cam timing belt slips, the DOHC goes boom.
the SOHC engine belt slip,cause no starts, due to huge
compression drop, and fails the test fuel tests.
SOHC, keyon, 30-46PSI
same for both. engines
but as all mPI engines it drop running at idle.
and rises at WOT> (FPR actions most work right running) ask
but its no running
ever do a 60,000 interval tuneup with a new cam belt.
If this is an "interference" engine and the belt broke while running you may have major engine damage. If non-interference, buy shop manual to give all details and torque values for this very important procedure.
what do you mean won't line up? is the belt brand new? You should be able to line them up no trouble. mark your sprockets with something when they are at TDC so you know exactly where it is without having to redu this. if you can give me a more detailed description of why the sprockets won't line up that would help. Thanks.
7 hours. at my shop $50 per hour equals $350 the high retail for the belt is $58 and it'swiseand maybe nessary to changethewater pump while the work is being done. This is for the 6 cylinder car and changing the oils seals on the oil pump and the cam shafts. The belt is supposed to be changed every 80 thousand miles and the seals and the waterpump shoould be changed too. If the belt failed ( broke) the the engine may be damged and have to be rebuilt to repair the damage or even replaced ( the whole engine). the 4 cyclinder is different. The V Tec taks 4 hours before changing the seals and the water pump. add 2 1/2 hours for that. the twin cam non v tec is about the same but if the belt isbroken all this is for not.as theengine may ( it does'nt have to be) damaged.and sometimes beyond resonable repair. ( you can fix anything if you spend enough money) If the engines damaged by a broken timing belt a good used moter installed is likly better an cheaper.
If all the coils are giving spark now,then you moat likely have gas fouled plugs now,so change them out with new ones,all 8 of them.If you do not have spark on all plug wires,pull the timing belt cover,and align the cam shaft and the cam,to see if the belt has jumped.If It hasn`t,replace the crankshaft sensor.
As long as the timing marks on the cams are lined up with the marks on the head ( And the crank is lined up as well - marks on the block - TDC) then the belt should be lined up correctly, however, if you do need the marks, a new belt should have them and they aren't too terribly expensive - ($25.00) - You could also take your belt and a little bottle of white touch up paint (Or magic marker you can see)to the parts store and transfer the marks from a new belt to your old belt, but if it had any miles on it ( 10K+) I'd go ahead and replace it if I were in there that far...-