amoy gas ang exhaust plus vibration issues. =(

**nori** · December 8th, 2013 08:24 PM

hey guys, magtatanong lang ako regarding sa issue ng toyota fx namin.

its a gas 7k engine. stock setup pa siya. ang problema kasi ang lakas ng vibration nya pag cold start, parang diesel talaga. pati body nanginginig. onting rev nababawasan yung vibration, high revs wala. pag mainit na engine nababawasan yung vibration pero umaalog pa rin yung kambyo, if you drive it during noontime minsan pati steering wheel may onting vibration, minimal but nonetheless annoying considering its a gas engine. tapos amoy gasolina yung exhaust nya, though nagtutubig ang exhaust meaning maganda timpla (supposedly) ng air-fuel.

its been like this for a year or so. di lang masyado pinapansin kasi sunday car lang siya. though nung na-aquire yung gen3 vios ng aunt ko i cant help but compare the smoothness of its engine. kasi di ba pag gas dapat tahimik at pino? diesel maingay at vibration. na-top overhaul na siya 3-4 years ago dahil may singaw ang valve sa cylinder #3, plus may biyak yung intake manifold sa #3 and 4. it was repaired with high temp steel epoxy afaik.

current problems:

1> amoy gas ang exhaust
2> vibrations, vibrations!
3> sometimes amoy gas din sa engine bay after a very long drive.

ngayon eto na ang nagawa:

1> replace spark plugs - tune up basically, still the same results. pag hinuhugot ang high tension wire ng SP #4 walang difference sa vibration, sa #3 onti lang, sa #1 and #2 namamatay ang makina. SP's are OEM spec by the way.

2> replace ignition coil from replacement to stock coil - nawala yung hard starting pero problem is still there.

any permanent solution to this? this vehicle has never failed us wherever we go, power and torque is still there. and it has served us well. what better way to say thank you than put it in pristine condition right?

**artsky** · December 9th, 2013 07:25 AM

Naalala ko nung araw yung sasakyan namin dad ko nagtu-tune up. Iniikot nya yung distributor cap para maging pino yung idling nung sasakyan. That was our toyota tamaraw yung unang unang generation. Carb engine sya. Hindi ko lang sure sa case mo bossing kasi since then hindi na ako exposed sa mga engines until now sa Gen3 vios ko which is electronic na.

Mas ok siguro pa check nyo na lang sa qualified mechanic yan. Ilang kms na sa odo? Has it gone thru regular maintenance checks?

**ghosthunter** · December 9th, 2013 09:42 AM

Originally Posted by nori

hey guys, magtatanong lang ako regarding sa issue ng toyota fx namin.

its a gas 7k engine. stock setup pa siya. ang problema kasi ang lakas ng vibration nya pag cold start, parang diesel talaga. pati body nanginginig. onting rev nababawasan yung vibration, high revs wala. pag mainit na engine nababawasan yung vibration pero umaalog pa rin yung kambyo, if you drive it during noontime minsan pati steering wheel may onting vibration, minimal but nonetheless annoying considering its a gas engine. tapos amoy gasolina yung exhaust nya, though nagtutubig ang exhaust meaning maganda timpla (supposedly) ng air-fuel.

its been like this for a year or so. di lang masyado pinapansin kasi sunday car lang siya. though nung na-aquire yung gen3 vios ng aunt ko i cant help but compare the smoothness of its engine. kasi di ba pag gas dapat tahimik at pino? diesel maingay at vibration. na-top overhaul na siya 3-4 years ago dahil may singaw ang valve sa cylinder #3, plus may biyak yung intake manifold sa #3 and 4. it was repaired with high temp steel epoxy afaik.

current problems:

1> amoy gas ang exhaust
2> vibrations, vibrations!
3> sometimes amoy gas din sa engine bay after a very long drive.

ngayon eto na ang nagawa:

1> replace spark plugs - tune up basically, still the same results. pag hinuhugot ang high tension wire ng SP #4 walang difference sa vibration, sa #3 onti lang, sa #1 and #2 namamatay ang makina. SP's are OEM spec by the way.

2> replace ignition coil from replacement to stock coil - nawala yung hard starting pero problem is still there.

any permanent solution to this? this vehicle has never failed us wherever we go, power and torque is still there. and it has served us well. what better way to say thank you than put it in pristine condition right?

You might want to check the condition of the gasoline. Given you said you only use this vehicle on the weekend, the gasoline might have started to "spoil". This is the problem is E10 blended gasoline.

How many weeks since you added gasoline in the tank? Has it been a couple of months na? From experience, E10 gasoline can go bad in as little as six weeks in the fuel tank.

Characteristics of spoiled gasoline: bad idle (vibration), underpowered when driven "normally", strong bad smell from the exhaust.

**jvnj** · December 9th, 2013 11:44 AM

Originally Posted by nori

1> replace spark plugs - tune up basically, still the same results. pag hinuhugot ang high tension wire ng SP #4 walang difference sa vibration, sa #3 onti lang, sa #1 and #2 namamatay ang makina. SP's are OEM spec by the way.

Sir nori,
Yung sa SP #4 mo, its a sign na there's little to no combustion at all. Dapat, every high tension wire that is unplugged, manginginig dapat ang andar ng makina. Try checking your high tension wires and the socket connections baka naman wala ng continuity yan kaya di na dumadaloy kuryente. Check also for high tension sockets for signs of corrosion. Usually, yan and problem sa SP #4, since madalas yan ang nababasa ng tubig since kung minsan may leak na yung gasket ng hood ng mga FX natin, kaya diyan diretso ang patak ng tubig.

Also try the gasoline type as mentioned by Sir GH. Ako, I felt the difference nung nag Petron Blaze ako, plus the fully synthetic oil. Laki ng pinagbago during cold start-ups. Tsaka usually, nung unleaded pa kinakarga ko, halos every two months ako nag spray ng carburetor cleaner para gumanda at pumino uli ang andar. Ngayon, bibihira na lang talaga. Syanga pala Chief, bago ka magpakarga ng Blaze, try consuming all your existing gasoline para purong Blaze na halos magamit ng makina mo at maramdaman mo ang difference. You may also check your ignition timing after using Blaze. Ako, I advanced it a little (konti lang

), which gained me a smoother and more responsive engine.

Good luck!

**jaypee10** · December 9th, 2013 07:22 PM

patay na ung number 4 kaya kahit hugutin mo ng husto kwako ng spark plug, hindi nag babago ang andar kaya siya nagnginginig...

**nori** · December 10th, 2013 12:40 AM

Originally Posted by ghosthunter

You might want to check the condition of the gasoline. Given you said you only use this vehicle on the weekend, the gasoline might have started to "spoil". This is the problem is E10 blended gasoline.

How many weeks since you added gasoline in the tank? Has it been a couple of months na? From experience, E10 gasoline can go bad in as little as six weeks in the fuel tank.

Characteristics of spoiled gasoline: bad idle (vibration), underpowered when driven "normally", strong bad smell from the exhaust.

bihira lang siya lumampas ng 1/2 tank when the vehicle is in storage. last time i used it to travel up north it was 3/4 down to near empty, had it refuelled to 3/4 and near empty twice. all these with a week in between refuelling and travelling. im using fuelsave unleaded from shell and di binabaha yung gas station plus madami customers so spoilage doesnt worry me. or at least i hope so.

tried XCS, medyo mas malakas siya magvibrate dun. hiyang siya sa unleaded ng shell. =/

* sir jvnj - sinubukan ko na pagpalitin yung HTW ng #3 and #4, same results. also tried cleaning the distributor cap to no avail.

**nori** · December 10th, 2013 12:54 AM

Originally Posted by jaypee10

patay na ung number 4 kaya kahit hugutin mo ng husto kwako ng spark plug, hindi nag babago ang andar kaya siya nagnginginig...

how to revive it?

**jvnj** · December 10th, 2013 09:53 AM

* sir jvnj - sinubukan ko na pagpalitin yung HTW ng #3 and #4, same results. also tried cleaning the distributor cap to no avail.[/QUOTE]

Sir nori, i think you can now isolate the high tension issue as what you've discussed above. Now, try removing your plug #4 and observe the condition; is it black filled with carbon, oily or somewhat wet with gasoline? If one of these symptoms appear, then your cylinder # 4 is not detonating properly. It could be either worn rings, leaking valve/s, etc.

**nori** · December 11th, 2013 12:40 AM

Originally Posted by jvnj

* sir jvnj - sinubukan ko na pagpalitin yung HTW ng #3 and #4, same results. also tried cleaning the distributor cap to no avail.

Sir nori, i think you can now isolate the high tension issue as what you've discussed above. Now, try removing your plug #4 and observe the condition; is it black filled with carbon, oily or somewhat wet with gasoline? If one of these symptoms appear, then your cylinder # 4 is not detonating properly. It could be either worn rings, leaking valve/s, etc.[/QUOTE]

medyo black siya. more like soot, not carbon build up.

**nori** · December 12th, 2013 07:53 PM

update update!

i think i found the culprit. may hissing sound sa bandang firewall. tried checking vacuum hoses and all pipings. turns out may oil leak between the engine block and the cylinder head dun sa rear part ng engine. kaya siguro deads yung cylinder 4 and mahina reaction ng cylinder 3 sa hugot-HTW test.

now, kung papalitan ko yung gaskets (cylinder head and intake/exhaust manifold) pwede bang yun lang palitan o sulit na ire-seat yung valves, palit valve seals etc? how much kaya damage nito?

also, di kaya fake yung replacement gaskets na kinabit dati? aside sa leak na nakita ko, may soot na namumuo sa bandang port ng intake manifold.