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  #16 (permalink)  
Old 09-22-2003, 07:21 PM
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so the bell housing bolts are the bolts that connect the transmission to the engine correct?

if the problem is the same as with the truck your saying my transmission may not be securely connected to the engine causing the shaking?

thanks for the posts and responses to my questions

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  #17 (permalink)  
Old 09-23-2003, 12:57 PM
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its getting worse

the car is shaking and shaking !!! whats wrong?????

now the car seems to sputter and backfire when you cut it off... any suggestions with this new symptom?
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  #18 (permalink)  
Old 09-23-2003, 11:39 PM
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Is this an engine that your rebuilt? And did u have it ballanced? Maybe the crank is the source of the problem
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Old 09-24-2003, 12:42 AM
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I'm no genius - but if it only happens in drive - could it just be a bad tranny?
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  #20 (permalink)  
Old 09-24-2003, 07:32 AM
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pony

It's not your bellhousing bolts if your cylinders aren't firing, continue with the wire, plug and compression checks!
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Old 09-24-2003, 07:43 AM
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68Impala.. In park and neutral there is no load on the engine.. When put into drive the engine gets a load thrown on and more parts come into effect. By the way does it shake in drive while at a stand still or while your taking off? Because if it shakes when you are taking off then it could be that the corky padding on the clutch plates wore off and its time for a tranny rebuild. (As 68 was sayin)
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  #22 (permalink)  
Old 09-24-2003, 07:45 AM
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Try this

Broken or loose flex plate or bolts! Vaccumn leaks?Spray all vaccumn connection with WD-40, with the engine running. If the rpm increase, you have a leak.Also spray around the intake manifold gasket and carb base plate gasket. Does the noise, sound like clicking or a ticking noise? Pull the trans inspection plate cover and look for broken, missing bolts or a crack in the flex plate. If all clyinders are firing, i think i might do a compression check as well. An out of balance engine (due to low compression i one cylinder) could make it shake. Please let us all know how it go`s.
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Old 09-24-2003, 08:01 AM
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Gawd YES! Puuuleeese check for vacuum leaks with WD 40 as Slider said. Also, just replace the bad wire...if its cracked or broken, it will arc...end of story.

Listen at the engine topside for "sucking" sounds too. Here's another trick to check for vacuum leaks or too lean carb mixture. Have your buddy put the car in drive while he's mashing the brakes. Pull off the PCV at the valve cover and spray the WD 40 into the PCV. If it smooths out, then you have a vacuum leak or improperly adjusted carburetor.
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Old 09-24-2003, 09:52 AM
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OHIO!!! Hey guys, just to keep ya informed, pony pm'd me that 4 of his cylinders weren't responding when he pulled the plug wires, soooooo I would say if it smooths out with some throttle, there is a vac. leak in the intake port that is feeding those 4 cylinders, I assume he looked for a vac. leak?
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Old 09-24-2003, 04:00 PM
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Looking for Vac Leak

I changed a plug in one of the cylinders to see if that was possibly one of the culprits.. and still nothing....

can someone explain what a vacuum leak is and where to look for them?????

could it be a bad pcv valve making the engine shake -- also note that recently i have been experiencing small short backfires when turning the car off

also when accelerating the power seems delayed
as if the carb is flooding... but then snatches and gives the power but delayed

keep giving posts and answers please... thanks for all the help

No i haven't looked for a vac leak... what is a vac leak and how do you check where exactly do you spray oil???

i pulled wires off the distributor and 4/8 plugs make the engine shake horribly

so i suppose 4/8 plugs are firing??

the very back left cylinder isn't firing and nor is the 2nd left plug (on the left side)

on the right side the 2 inside plugs aren't firing and the outside 2 are

(i assumed that if i pulled the plug wire and the engine starts shaking that the plug/ plug wire was bad)

how can i find a vacuum leak? is it something that can be fixed by a home mechanic or something that needs to be done by a certified mechanic..

just to catch you up... the car is beginning to back fire when you rev the engine and also it has been shaking with the car in park... with the car in any gear it shakes.... usually when you first start it up in the morning... the car doesn't shake until a few seconds of idling STILL ALL THE SHAKING STOPS WHEN GIVING IT A LITTLE GAS also the car shakes violently when you cut it off..?? what are these signs of? and no i have not changed all plugs nor plug wires out yet -- i changed one plug to see if possibly the plug was just fouled and it still doesn't run with the new plug in??

Last edited by ponybuster; 09-24-2003 at 04:00 PM.
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  #26 (permalink)  
Old 09-24-2003, 04:13 PM
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Sounds like you have the ignition wire(s) going to the wrong plug(s). Pick up a manual at your favorite automotive parts store since I am assuming you don't have one. Check the correct timing order for your motor and confirm the spark plug wires are going to the correct spark plug. If your spark plug wires are bad, then the spark could also be jumping over to another plug wire.
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  #27 (permalink)  
Old 09-24-2003, 04:17 PM
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Alright.. While pulling wires.. If there is NO CHANGE in engine rpm then that wire is bad... If u notice it bog or act different after pulling a plug wire then that wire is good.. Personally I'd pull every plug and go through grounding each one to part of the body or engine.. and tap the ignition till u see it spark... Just to know for sure if its bad or not.
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  #28 (permalink)  
Old 09-24-2003, 04:38 PM
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Is that it

is that all there is too it????

if you pull the wire off the distributor and the engine doesnt shake... the wire is bad

thats that -- how often do wires go bad (these wires look relatively new)

they are a year old at least though?

THIS IS AN EDITED POST FROM ABOUT 5 MINUTES LATER

can't be the plug wire.... i changed one of the firing plug wires with the plug and it still does the same thing

Last edited by ponybuster; 09-24-2003 at 04:49 PM.
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  #29 (permalink)  
Old 09-24-2003, 04:48 PM
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Hea, Pony!!

Your not jerkin our chain are you? Up above you were told how to check for vaccumn leaks. What gives? Are you new to cars completly? I only ask, because some fella`s will get on here and act dumb!!! You wouldn`t do that to us would ya? Have a wonderfull day, starting right now.
Slider in Wa.
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  #30 (permalink)  
Old 09-24-2003, 05:06 PM
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Wink oih

not jerkin anyones chain... and yes i am new to cars
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